Lots of online retailers will send you a 10% discount to complete the transaction I've done this a few times. If I'm not sure abut buying something I put it in my basket and then think about it for a while. Often retailers will send you a discount code which can be tempting. You will need to have entered your email address – so progressed a step or two through the payment process, but not all the way. Except for Amazon. They like to raise the price if left in cart lol.