Fair enough - PC version is currently £14.99 whilst the ps3 version is currently out of stock on the uk high streets. OFC you could buy 2nd hand and get if for about £15 on a scratched up disc - or you could have bought it in the steam sale for 75% off ofc on the pc.
That a dodgy call really - £14.99 new, £15 second hand or if your timing is right £3.75 new.
Think I'll stick with slightly older PC games and crack them tbh!
* apologies for quoting prices in sterling but I simply can't be bothered to convert them - you get the picture anyway!