Pretty much, make it a forbidden activity to sell plots that way, because the FC seller sharks is likely to get as many tickets put in as possible during upcoming housing frenzy that would be like this even WITH lottery.

They will be there and it is organised work, SE, you can address this before it goes live.

Else you will see FC's for sale for real life cash on sites... and also... you guys could browse through these sites and then just strip whatever person for ingame property, if engaged in such activity.