177 acres and a lunar rover
Some Give Moon Plots As Valentines. $49 for 177 acres isn't bad. The Romanians are getting a better rate than the Lunar Embassy gives US citizens ($15.99 an acre plus $1.16 Lunar Tax of course). Maybe that's because they're on the dark side or something?
If the Moon is too terrestrial for you, Venus, Mars and Jupiter's Io are also up for grabs.
The FAQ is rather enlightening and answers the question "What if I have strange neighbors?" Yeah, and what if it's this guy?