[quote name='killer9']i heard its 2.5 not 4 4.5 mill it sold decent for such a short game stil wouldnt pay more than 30 for it[/QUOTE]
I think it was 2.5 retail, but Valve doesn't have to release any numbers for their Steam service, only they know, and I'm sure for half off, $25 on the PC side, they sold easily that much more.
Really with this drop I've got a ton of clan members that are picking it up.... I think like TF2 it's not worth 50... but 25/30 easy enough.