I have some great phones that work and only have broken glasses.
How old are the phones?
Not sure, but I think they are fairly new.
Are there any scratches on the phone or any other visible damage other then the broken glass? 
No. This is a great deal. six phones, plus you give me a t-mobile phone and $50. I can even drive them over if you don't live more than 10 miles from Tracy.
Well since they have broken glass and I would need to get that repaired and you are not sure how old they are, would you be willing to do $35 and I will pick them up?
How about $38 and you pick them up?
Well I would be coming more then 10 miles to get them so is there any way you could do the $35 considering all this plus it is going to be a cost to get these fixed as well.
OK. You pick them up, bring the phone for trade, and I'll give you $35.
You got yourself a deal.