I would add, regarding the resell of plot, that GM won't take any action unless "the intention from the begining was to resell it", confirmed by a GM the other day when i filled 2 report in a week regarding the same player trying to resell his plot in PF.
Sooooooooo you can buy a plot just for resell as long as you tell the GM that contact you "but, I did not intend to seel it from the begining" cause, as everyone knows, people never lie whan they do something forbiden :/