Judging from prices on amazon;
bravely default CE
tales of symphonia CE,
complete .Hack// series(kite and haseo's story)
Xenoblade
Xenosaga trilogy
God of war III CE
Tales of Xillia CE
60gb PS3
Suikoden 3-5
Crimson gem saga
Hexyz Force
Pokemon Colosseum&XD Gale of Darkness
Now most of these aren't super rare, just some that have retained/held on from their initial value