If you have size 3-4 feet, I have a code that can get you a more or less free pair of designer folding ballet pumps (the type you keep in your handbag for when your high heels start hurting your feet too much).
to www.redfootshoes.com Redfoot, look in Clearance where there are lots of pairs at £10.50 and use the code REDHAIR1 to save £15. You will have to pay postage of something like £4.99, but if this works you'll be getting a pair for 49p.
Let us know if it works! I just bought a pair off Ebay and they look great and are supremely comfortable. 