Hello, I'm interested in the Galaxy Edge 7 you have for sale.
I have a wonderful Samsung Galaxy Edge 7 for sale. It is in perfect condition. 
I am asking $300 for the phone and it works on a Sprint network
The listing said $280, and I'll be honest, my budget is much closer to $140. I'm willing to negotiate on the price, though. Keep in mind that your phone is over a year old at this point.
The phone is in perfect condition and has 32 Gigs of memory. I am willing to lower the asking price to $250 if you are willing to come pick the phone up. 
I can do $210.
Can we split the difference and land on $230? 
OK, that's fair. I'll send you an official offer of $230. Thank you for working with me on this.