Wilk,
I PM'd Gen2000 and he is indeed the same Genesis who wrote the vendor buyer. He mentioned that he is in the process of updating it and I gave him the following suggestions relevant to buying gems and other items subject to the market:
"1. Add capacity to buy the stuff that is market driven rather than on the escalating restock timer. This would mean buying over again immediately from vendors until the price hits your stopping point. You could do this with a menu toggle, or have it trigger based on what the user is buying.
2. Allow different price points for different items."
TM, I think this thread should be under the "Ultima General Discussions" header.