Install of interior kit - rip off !

I bought a great set of seat skins and door panels from Pro Fit interiors and decided to get a few quotes as to how much to install . One guy was 1500 for install of all seat and door panels as well as headliner , the worst was 4200.00 $ just for labour to install without headliner work from a resto shop ..can you believe ? I tried to keep a straight face but i was pissed off for wasting my time.

Does 1500 sound good or is that also a little steep ?

Thanks

Rob