Value of '72 X Code 442

[TimG]

I looked at a car today that a fellow is interested in selling and I'm not sure of a fair price for it. He didn't offer an asking price and I wanted to research the value before I make an offer.

It's a 1972 Olds W30 442 S coupe. A true X code (HP 455 not available with AC) automatic car.
It's a 30,000 car that's white/black and certainly one of the most well preserved cars I've seen. It's really a gem with original paint and interior.

Of course, it has the W25 hood that all W30's came with. It also has the optional steering wheel and gauges along with tilt steering wheel and AM/FM radio. I've always liked the '72 Olds and the X codes are pretty neat. This has to be one of the best I've ever seen. Any feedback?

Thanks