hello.. are you interested in the mattress?
I am, how old is it?
just bought a year ago!
Ok, I found the same size and style mattress online for $250 brand new. I can find used ones for $100 or less, but I like this one, can you do $100?
that's a little low. this was in a guest room and slept on all of about two times. how about $175 and i will deliver, as well as throw in brand new 6000 thread count egyptian cotton sheets that have never been used but were bought for the bed when we bought the mattress?
I tell you what, I can do $150 with everything you mentioned and I'll come pick it up?
you got a deal. 
awesome!