I shop a lot on eBay and use Big Crumbs to earn moneyback but I've noticed that Quidco and also offers money back on successful bids.
Which gives the best return (I only get a few cents back a month from big crumbs for spending about £30 a month on average) Quidco says money back is 50% for winning a eBay auction or Buy It Now item. This amount is based on eBay revenue - not on the price you pay.
When you calculate it in real terms (i.e. based on eBay fees) which is the best?