If I was going to buy from a website I wouldnt buy from someone who was just selling items - and not posting anywhere else. i would also always ask for proof that the seller has the item they are selling (ie: personalised pics).
Any purchases are made at your own risk - so please try and minimise it.
I've just banned a member who was posting under 2 names and scammed at least 1 member. You have been warned.