Well they do say they are on sale and that they are a Spal dealer. They also say they are a family business, open for over forty years. They say they have a blue chip list of customers:

"Mattson’s Inc. is proud of the quality work we have done for many different speciality shops, including: Chrisman’s C.A.R.S, Roy Brisio Street Rods, Barry White’s Street Rod Repair, Moal Inc., and So-Cal Speed Shop."

So I would say buy with something that has purchase protection and let us know how it turns out.