Hey there! 
Hi  I'm interested in purchasing your bed and mattress 
Okay, awesome! I'm selling it for $200 but could lower the price a bit if you can come over to my place and pick it up.
can you tell me the condition of the bed?  does it have a headboard?
Its got a wooden frame and headboard, its all in perfect condition, no stains or anything. 
And is the matress clean as well?
Yes of course! Just like new, no smells, or stains, or discolorations.
I would be willing to pick it up , if you would accept $100 for it
If you pick it up I could do $125, if thats okay.
Well, since you said its in great condition, then I will agree to $125 .  And I will pick it up.