Does it have any scratches/scuffs or anything like that?
No, it's in like-new condition
I was looking at something similar but in a full size. Can you come down on the price? If the price is good, I can get different sheets etc.
I have some new sheets I can throw in if you're willing to pay the listing price. 
I could do $85 and we're picky about sheets because of allergies but thank you.
That seems a little lower than I can do. I can come down a bit, but you'll need to do better than that.
Can you deliver it?
I have a van, so that shouldn't be a problem, but I'll really need around $135 to make it worth my while
I can go $110 delivered.
125 is the best I can do.
I can't for more than $115.00
I really can't do less than $125
If you go ahead and put the sheets with it I'll do $120.00
For 125, I'll throw in the sheets, but with that and delivery, I think that's more than a fair price