I've got a gently used iPad 2 for sale. 32gb and I'll throw in a leather case for you
I'd like to offer you $122 for the ipad
I can't go that low. It's barely used. I'll do $175.
when you say gently used, what exactly do you mean?
It's less than 8 months old. No noticeable wear on it. Used for about 5 hours a week.
I feel like $175 is way too high though. 
A brand new iPad 2 would cost you $400
Are you looking to buy an iPad 2?
yes definitely 
I've got one... barely used. I can sell it to you for $175. A brand new one would cost you $400.
yes but I can find a used one for 150 or less.. would you be willing to do 140
No. The lowest I can go is $170.
how about 160
Meet me at $165 and you've got a deal. A GREAT deal.