Hi Ian yes i tend to agree with you,alot of thier items do look genuine, I'm very sure the oasis guitar is genuine because I've had them all signed for me IP including Zak..
I would stay away from this seller. I'm not an expert too but no rookie either... And I can say for 99% sure he sells a lot of fakes. Like the Roger Waters for example. Lots of his items are barely viewable too which should ring an alarm. This Oasis guitar can be genuine but I have my doubts (the Liam?).