I was contacted by a contractor who is willing to buy it from me. He is offering me much less than what the property/dwelling is worth. I am going to take his offer because honestly at this point, I just want it out of my hands. I own the property out right. I paid off my mortgage two years ago and there is no lien on the property.

Here is my question- he has been handling everything and says that my husband and I just need to show up to sign paperwork next tuesday. He says we are going to do a “quick sale” and that he will pay us right then and there with cash. (I’m assuming he means a cashier’s check and not literally cash) This whole process has taken only about two weeks. I’m starting to get concerned that maybe I’m missing something? I’m anxious to get this over with and I’m sure he knows that. I just don’t want to be taken advantge of even more so than I already am by accepting less than what the property is worth…
Is there anything I should know going into this?
What exactly is a “quick sale”?
…btw, I did ask this same question a couple hours ago but got zero responses. I figured if I used a different heading for the question, I might get more answers…