game.co.uk had load of pre-owned ps3 with 12 month warranty, but when i last looked they had got rid of all of them just before christmas (or perhaps taken them off to “force” newer console purchases as christmas gifts) you do see quite a few in high street pawn/trader/independent second hand gaming stores.
the ones on gumtree seem overpriced (at least where i am) £100+ considering a ps4 is getting as low as 249, and you can also pick up official warranted refurb ps4 now, i saw one for 200 quid.
am i right in thinking ps3 games cannot be played on ps4? and you can only download & purchase certain “conversions” of older titles from the PS network ?