well no problem! GTA'll be back in a trilogy pack for the PS2 like there was a triolgy pack for the Xbox version a couple years ago and is only $40!
http://www.ebgames.com/product.asp?product%5Fid=281666
Dont forget to also pick up GTA: Liberty City Stories (PS2)that is at least $20 and GTA: Vice City Stories should be on PSP by now but hopefully will be ported to the PS2 soon as well.