Up for your buying consideration is the gently pre-owned PS2 game Wild Arms 4 (Sony PlayStation 2, PS2 2006) Tested and Working.

The manual and disc are in good condition and look to have been played as usual over the years (see last photo).  The disc has a few very slight cosmetic scratches and buffs, which are probably easily cleaned/removed however I'm not sure how to do it and don't want to damage anything.