I think you mean PS2 or PS3.
since PS4 is not yet released, will be released end of this year.
it depends on your budget.
I think new PS2 is about 400 QR and you can get a PS3 for like 900 - 1000 QR at shops in souq or 1200 + at any reputed electronic store.
if you need PS2 games I've got many around 30 or 40+
not for sale.
just come over with some blank DVD's and get copies. :)