Yo yo, heard about this - thought it might be useful to some of youse.
Apparently GAME and MVC are doing a deal where if you take 4 of your old PS2 games in (excluding, for some reason, wrestling and football games), you can trade them in and buy a brand new game for 99p.
Now this is a flava enough deal with shizzle like GT4 and MGS3 out, but it can be made more beneficial by going to cash converters / blockbuster (or anywhere that sells cheapo second hand PS2 games) - pick up 4 for a few quid each (think I've seen stuff for about £5 each), then do the above.
Hey presto - you've got GT4 for £20.99.
That is all.