<prompt> Human: As the title says I may be getting scammed.A few days ago I bought a new bed, so naturally I am trying to sell my old one. I make an ad on Craigslist selling my mattress and box spring. Nothing really special but Id like to make some money back.Probably about an hour after I created the post about 12:00am. I receive a message from a man saying hell buy it sight unseen for my asking price, plus an extra 40 to secure he gets it.He says hell send me a cashiers check and once its been cashed hell arrange for movers come and pick it up. I am a little skeptical at this point. With think whats he harm in giving him my address to even see if the does send the cashiers check. Not thinking if this is a scam I just gave him my full name, and my address...But sure enough the letter is overnighted and in my mailbox the next day. The day its delivered he informs me it has arrived, but his account had messed up the amount. And included the fee for the movers in the check as well...the amount on the cashiers check is now 1550 over a thousand dollars more than my asking price for the bed.On the cashiers check it is from Citizens Bank of Rhode Island. And from the company Quality King Distributors 35 Sawgrass Dr. 1 Bellport, NY 11713Ive looked up the bank and that business. And it comes up in Forbes BBB websites and the like. Theyre website was created this year. Google profile September of this year. Ive also looked up fraudulent cashiers checks and I guess thats a thing.So now at this point I dont know what to do. Should I believe this guy? Or just nope out of this as fast as possible?  <response>: Beyond whats been mentioned, when dealing with stuff like this, just use common sense. Is there any logical reason for someone to buy a mattress sight unseen and offer extra? Or to spend money on movers and overnighting a cashiers check? At that point, he may as well buy a new mattress, ya know? 