What the heck is this stuff worth??

Are you buying this from him and trying to determine a fair price? What I have done is sell & ship their items and we split everything 50/50. It's a lot work selling & shipping stuff and it can take a long time too.

I assume you want to resell this stuff. All of this stuff has some value but even NOS items don't sell for too much ( as compared to B & E body stuff). The items that fit inside modest size boxes are easier ( & cheaper) to ship so would be easier to sell. The items such as commando valve covers $100 to $150) & twin post mirrors ($20 to $50 for one with nice chrome) could find new homes in a few days. Large items that you can ship but require very large boxes like a fender ($50 to $100) are also expensive to ship and its a lot of time to package it properly.

Without seeing any of it My guess on a fair value would be $750... Maybe up to a $ 1000. I would want to be able to get half my cash back in two weeks.