You could get at least $100 more for your Glock with a private sale than they offered you for trade, at least around here. Then you would be in the ballpark. Also, the Bruniton 92FS runs $100 or so less than the Inox.
As far as choosing between the two, both are accurate and highly reliable, but the trigger/safety systems are about as different as can be. Consider what system you want and your choice will be made.