WIW: 472 Stroker Crank

Depends. Has it been magnafluxed? Sounds like it must be a stock steel 440 crank for that price. A stock steel 440 crank goes for usually $100 or less.

If the crank journals have been turned down small enough to fit into a 400 block dont bother with it as this method makes the crank weaker.Best way is to align bore the block mains to fit the crank.

What the heck did he pay $4-500 for at the machine shop? Maybe it's been lightened?

Get some more info,and maybe some pics?