Need to know the value of tinted Glass

I'm looking at doing a trade with a local guy. He want the tinted glass out of my 69 Nova Parts car. As part of the trade I will get a set of factory clear glass back and some other things. I'm just wondering what the value of rear, 2 quarter, 2 doors, 2 vent window, and the front windshield out of a factory tinted car are worth and then how much a set of clear is worth. I don't want to get the short end of the deal here and I want to make sure he doesn't either. Just trying to make sure we can both walk away happy and not have either of us regretting it later!

Thanks in advance!