can you buy gift vouchers online (from the original store NOT from a 3rd party)?
If you can (for high street retailers - tescos, currys, pc world, argos, etc.) can you use the 5% vouchers etc you see on here to buy them? If that is possible, could you not purchase x amount of vouchers, get the discount on that purchase and then use those vouchers to fund another purchase and then use the original code again. Effectively doubling the relevant codes value.
Anyone tried this (or has experience of using staff discounts to buy vouchers because this could be another way of saving a few quid).