Hi, I am interested in your thermostat. Is it new or has it been used?
I used it for a couple months it is in like new condition. It works perfectly. 
Is it easy to use?
Yes, it is easy to use. I don't have the box or the manual, but the manual is available online.
I have priced these and I think $39 for a used one is a little high. I would like to buy it but I think $20 seems more fair.
I can't go that low. I paid more and like I said it has barely been used. I could come down to $32
I have $27 cash on me right now and I can come get it now. Would that work for you?
I could accept that if you would come get it now with cash.