the MMO game second life sells in-game items for US dollars. check out their island page:

Pricing

Small islands are priced at US$1,250 for 65,536 square meters (about 16 acres), monthly land fees for maintenance are US$195.

Large islands are priced at US$5,000 for 262,144 square meters (about 64 acres), monthly land fees for maintenance are US$780.

who is paying $200 a month for a virtual island?

second life intrigues me because its supposed to be a player-built world.