Why does the Mac version cost more? TurboTax Home & Business Federal + e-File + State 2010 [Download]

TurboTax Home & Business Federal + e-File + State 2010 [Download]
Windows Vista / XP $65.99



TurboTax Home & Business Federal + e-File + State 2010 MAC [Download]
Mac OS X $74.62

Twitter update from the VP of TurboTax 12/19:

Off On A Tangent: Why does the Mac version cost more? via @stevegarfield/// Mac and Windows are the same price./bob Meighan, VP, TurboTaxless than a minute ago via Tweet ButtonBob Meighan
TurboTaxBob

Thanks!

So now the question goes to Amazon, why the difference in pricing?