Since find UO started I have been trying to buy a house in Luna City on the Europa shard to set up some vendors, but I dont see them being sold anywhere. I have also searched websites to see if they are being sold there but I cant seem to find any.
Does anyone know where or how to buy one?

Hmm wish i knew about this site sooner. I sold my luna house about 2 months ago sorry. If u wish to know what spot in luna i had and how much i sold it for, feel free to pm me

My suggestion would be to drop some books around luna city and see if any of the house owners happen to read one. (Aside from posting on forums, of course).

If you pull up your UO map, some shops will use housing floor tiles to "write" things on their roofs or floors (for buildings with no roof), such as "4 Sale." Maybe run around town looking for any like that, then if you find any, check the house sign or a bulletin board for ICQ or contact information.

Theres one for sale on Stratics' Trade Europa forum, opposite the north gate I think