I just wanted to share the fact that I have been able to get relatively cheap 24k gold leaf from ebay. Various traders from Thailand list it on their ebay shops. I bought a pack of 100 leaves, each one about 4cm square. I found that size easier to work with and it has been a very positive experience and I much prefer the real stuff to the imitiation leaf.
So far every transaction has cost me GBP£10 or less for the leaf and the p+p.