Julian Dibbell is an entrepreneuer who specializing in amassing virtual goods in the Ultima Online universe and then auctioning them off on eBay. He maintains a fascinating index of indicators to the health of the Ultima economy:
Total sales: $113,049 (-11,984 from last week)
Total sales, annualized: $2.9 million
Total volume: 3,147 sales (-341)
Exchange rate: $16.50 (+0.37) per 1 million Britannian gold pieces
Price of an 18×18 house in the new Malas region: $150.80 (-3.66)
My gold holdings: 74.9 million gp ($1,235.85)
My dollar holdings: $214.04
My profits, year to date: $1,088.10
