It keeps alternating between the high 60's and mid 70's.
I already went to the Verizon stand in our mall and ordered a 64gb iphone 5s at subsidized price though. They're the only ones that still let me get subsidized pricing and keep my unlimited data. It should be available for me to pick up on Wednesday.
If I recall correctly, it should have more than 80% if you have less than 300 cycles. I think you'd be covered under warranty, and if they do, at least you'd get to sell it for a little more.