<?xml version="1.0" encoding="us-ascii"?><InstanceReport xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><Version>2.4.0.8</Version><ReportLongName>106 - Disclosure - Selling Commissions, Dealer Manager Fees and Other Offering Costs</ReportLongName><DisplayLabelColumn>true</DisplayLabelColumn><ShowElementNames>false</ShowElementNames><RoundingOption /><HasEmbeddedReports>false</HasEmbeddedReports><Columns><Column FlagID="0"><Id>1</Id><IsAbstractGroupTitle>false</IsAbstractGroupTitle><LabelSeparator>

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</LabelSeparator><Level>2</Level><ElementName>cik1436975_SellingCommissionsDealerManagerFeesAndOtherOfferingCostsTextBlock</ElementName><ElementPrefix>cik1436975_</ElementPrefix><IsBaseElement>false</IsBaseElement><BalanceType>na</BalanceType><PeriodType>duration</PeriodType><IsReportTitle>false</IsReportTitle><IsSegmentTitle>false</IsSegmentTitle><IsCalendarTitle>false</IsCalendarTitle><IsEquityPrevioslyReportedAsRow>false</IsEquityPrevioslyReportedAsRow><IsEquityAdjustmentRow>false</IsEquityAdjustmentRow><IsBeginningBalance>false</IsBeginningBalance><IsEndingBalance>false</IsEndingBalance><IsReverseSign>false</IsReverseSign><PreferredLabelRole>terseLabel</PreferredLabelRole><FootnoteIndexer /><Cells><Cell FlagID="0" ContextID="from-2013-01-01-to-2013-06-30.579.0.0.0.0.0.0.0" UnitID=""><Id>1</Id><IsNumeric>false</IsNumeric><IsRatio>false</IsRatio><DisplayZeroAsNone>false</DisplayZeroAsNone><NumericAmount>0</NumericAmount><RoundedNumericAmount>0</RoundedNumericAmount><NonNumbericText>&lt;!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" --&gt;&lt;div&gt; &lt;div&gt;&lt;!--StartFragment--&gt; &lt;table style="BORDER-COLLAPSE: collapse; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 100%" cellspacing="0" cellpadding="0"&gt; &lt;tr style="VERTICAL-ALIGN: top"&gt; &lt;td style="FONT-SIZE: 10pt; PADDING-RIGHT: 0.8pt; WIDTH: 0.25in"&gt; &lt;strong&gt;&lt;em&gt;6.&lt;/em&gt;&lt;/strong&gt;&lt;/td&gt; &lt;td style="FONT-SIZE: 10pt; PADDING-RIGHT: 0.8pt; TEXT-ALIGN: justify"&gt; &lt;strong&gt;&lt;em&gt;Selling Commissions, Dealer Manager Fees and Other Offering Costs&lt;/em&gt;&lt;/strong&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px 0pt 0.25in; TEXT-INDENT: 0.25in"&gt; &amp;nbsp;&lt;/p&gt; &lt;p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px 0pt 0.25in; TEXT-INDENT: 0.25in"&gt; Selling commissions and dealer manager fees are paid to the Dealer Manager, pursuant to various agreements, and other third-party offering expenses such as registration fees, due diligence fees, marketing costs, and professional fees are accounted for as a reduction against additional paid-in capital ("APIC") as costs are incurred. Organizational costs are expensed as general and administrative costs. The following table represents the selling commissions and dealer manager and other offering costs for the periods indicated:&lt;/p&gt; &lt;p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px 0pt 0.25in; TEXT-INDENT: 0.25in"&gt; &amp;nbsp;&lt;/p&gt; &lt;table style="BORDER-COLLAPSE: collapse; FONT: 10pt Times New Roman, Times, Serif; MARGIN-LEFT: 0.25in; WIDTH: 95%" cellspacing="0" cellpadding="0"&gt; &lt;tr style="VERTICAL-ALIGN: bottom"&gt; &lt;td style="FONT-SIZE: 10pt"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 1pt solid; COLOR: black; TEXT-ALIGN: center; FONT: bold 10pt Times New Roman, Times, Serif" colspan="6"&gt;For the Three Months Ended June 30,&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 1pt solid; COLOR: black; TEXT-ALIGN: center; FONT: bold 10pt Times New Roman, Times, Serif" colspan="6"&gt;For the Six Months Ended June 30,&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;tr style="VERTICAL-ALIGN: bottom"&gt; &lt;td style="FONT-SIZE: 10pt"&gt;&amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 1pt solid; COLOR: black; TEXT-ALIGN: center; FONT: bold 10pt Times New Roman, Times, Serif" colspan="2"&gt;2013&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 1pt solid; COLOR: black; TEXT-ALIGN: center; FONT: bold 10pt Times New Roman, Times, Serif" colspan="2"&gt;2012&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 1pt solid; COLOR: black; TEXT-ALIGN: center; FONT: bold 10pt Times New Roman, Times, Serif" colspan="2"&gt;2013&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 1pt solid; COLOR: black; TEXT-ALIGN: center; FONT: bold 10pt Times New Roman, Times, Serif" colspan="2"&gt;2012&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 1pt; FONT: bold 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: rgb(204,255,204)"&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 32%"&gt; Selling commissions and dealer manager fees&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 2%"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 13%"&gt; 387&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 2%"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 13%"&gt; 217&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 2%"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 13%"&gt; 680&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 2%"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 13%"&gt; 510&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif; WIDTH: 1%"&gt; &amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;tr style="VERTICAL-ALIGN: bottom; BACKGROUND-COLOR: white"&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; Other offering costs&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif"&gt; 552&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif"&gt; 216&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif"&gt; 989&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; $&lt;/td&gt; &lt;td style="BORDER-BOTTOM: black 2.5pt double; COLOR: black; TEXT-ALIGN: right; FONT: 10pt Times New Roman, Times, Serif"&gt; 561&lt;/td&gt; &lt;td style="COLOR: black; PADDING-BOTTOM: 2.5pt; TEXT-ALIGN: left; FONT: 10pt Times New Roman, Times, Serif"&gt; &amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px"&gt; &amp;nbsp;&lt;/p&gt; &lt;p style="FONT: 10pt Times New Roman, Times, Serif; MARGIN: 0pt 0px 0pt 0.25in; TEXT-INDENT: 0.25in"&gt; Since the Company&amp;#39;s inception through June 30, 2013, it has incurred approximately $6.0 million in selling commissions and dealer manager fees and $6.9 million of other offering costs in connection with the public offering of shares of its common stock.&lt;/p&gt; &lt;!--EndFragment--&gt;&lt;/div&gt; &lt;/div&gt;</NonNumbericText><FootnoteIndexer /><CurrencyCode /><CurrencySymbol /><IsIndependantCurrency>false</IsIndependantCurrency><ShowCurrencySymbol>false</ShowCurrencySymbol><DisplayDateInUSFormat>false</DisplayDateInUSFormat></Cell></Cells><ElementDataType>nonnum:textBlockItemType</ElementDataType><SimpleDataType>na</SimpleDataType><ElementDefenition>The entire disclosure discussing the commissions, fees and costs associated with the Initial Public Offering.</ElementDefenition><ElementReferences>No definition available.</ElementReferences><IsTotalLabel>false</IsTotalLabel><UnitID>0</UnitID><Label>Selling Commissions, Dealer Manager Fees and Other Offering Costs</Label></Row></Rows><Footnotes /><IsEquityReport>false</IsEquityReport><ReportName>Selling Commissions, Dealer Manager Fees and Other Offering Costs</ReportName><MonetaryRoundingLevel>UnKnown</MonetaryRoundingLevel><SharesRoundingLevel>UnKnown</SharesRoundingLevel><PerShareRoundingLevel>UnKnown</PerShareRoundingLevel><ExchangeRateRoundingLevel>UnKnown</ExchangeRateRoundingLevel><HasCustomUnits>true</HasCustomUnits><IsEmbedReport>false</IsEmbedReport><IsMultiCurrency>false</IsMultiCurrency><ReportType>Sheet</ReportType><RoleURI>http://www.LightstoneREIT.com/role/SellingCommissionsDealerManagerFeesAndOtherOfferingCosts</RoleURI><NumberOfCols>1</NumberOfCols><NumberOfRows>2</NumberOfRows></InstanceReport>
