I have some old ps2 games and some ps3 games that i dont play wheres the best place to trade in?

ive tried music magpie and got around 50 pound for 14 games i think that's alright but was wanting more money than 30p a game so just asking where is the best place to trade in old games and get a good amount of money back im talking about fifa 2003 tiger woods pga tour 08 tomb raider legend etc.