@TechnoMage: I just reread your earlier post, and if the gift card analogue does not hold, then your scheme of selling a brokering service will not stand either : Then it is Mt. Gox (or you as local reseller) that would have to add VAT on the product. But again, it is not bartering...
@psy: gift card analogue again - at least in DK you are not obliged to "buy back" a gift card. Whether, on the moving price issue, we need to check this... An accountant friendly question could be if you may issue non price fixed value cards ? (like my earlier cheap Wednesday, expensive Saturday example) You could of course, in a shop setting, implement this as a coupon with different discount on different days, again some questioning to do
