I too like the idea of stickers - but why charge? Ooooo - wait a minute it's not as crazy as it sounds. Why not get a load of very simple 1 colour stickers mass produced (say 2000) and include 3-4 with every order or correspondence. Then add the extra amount they cost to make to the p&p or carriage charge for that order?
That way you can market the site really effectively and not get too tied up in trying to sell the stickers at a decent price?
A friend of mind was marketing his radio programme in this way - and it worked brilliantly. EVERYONE loves a free sticker!
(I'm quackers about bikes)
(I\'m quackers about bikes)