Hi, you're selling a FitBit Flex and bands?
Yes I still have them! 
Excellent, what kinds of bands are they?
It comes with the original black band, a blue band and a red band.
Oh cool, 3 bands. That's good. I can offer you 40 dollars, what do you think?
The lowest I can go is $50 if you come and pick them up with cash.
Your ad doesn't mention a charger, do you have one?
Yes it comes with the charger and original box.
Hmmmm. If I come pick them up, how about 45?
Ok, that's fair.