Hey dhall......'76 was the last year of the 900, then the motor displacement was increased to 1000cc.
Although it's a KZ, it is very similar to the Z1 but not even close to being collectible and therefore prices are much more reasonable. Looks to be in pretty good condition, Kerker was a common pipe and very good, I'd value that bike at $2500, if running good with title.
Of course, he may think it's worth more (hopeful?!) but I've seen similar for 2 grand or so.
The checkerboard does not help value!
I came close to buying one before I bought my Z, but held out. Jump on the chance to ride one, I think you would really like it.