Suing a seller for violating purchase agreement?

[Bernard Chouinard]

I'm curious - Has anyone here sued a seller for selling a house after a purchase agreement was signed? I have an agreement signed but it appears I have an unethical seller who is still trying to sell the place. 

[Eric James]

I've never done it, but I wonder if a possibility in some situations is simply to tie up the property through a legal proceeding so that the seller can't sell it with clean title to anyone else for an extended period of time. That might motivate them to fulfill a binding contract to sell to you.

I can't imagine signing a purchase contract (esp if it was for a primary residence) in which the seller could simply cancel for a better offer.