Don't know if I've just been lucky, but if so one of my sons Teachers has as well.
I logged onto the Amazon website to get a couple of CD's and when I got to the Checkout I had mysteriously been given a Gift Voucher for £10. So I got 2 CD's for 48p, which should have cost £10.48.
When I mentioned it to the family my son said that one of his Teachers had mentioned that this had happened to them. Don't know if it's a 'glitch' or their way of giving their customers a New Year Bonus.
Thought someone else might like to see if they have Gift Voucher too!