Don't see why.  Make sure there's plenty of nice piccies.  Make sure you give a fulsome description.  Make judicious use of the options for making your item stand out.  Don't set a silly reserve price or start price (gets the punters bidding). Make sure you know how you are going to P&P it and how much it'll cost you.  Be willing to ship to Europe at least.  Setup a paypal account and don't ship til the moneys in the bag.

Never had a single problem selling on ebay.  Bub's only problem with the ebay route is going to be the same as with the forums - market saturation.  There's only so many people in the world at any given time in the market for Mana.

Ebay'd be fine so long as he doesn't try and shift it all in the same week.