"New" magnum heads?

Found a company in WV on e-bag that has "new" stock magnum heads, they come with a 1 yr. warr., heavier castings, they are stock replacements, all they do is make sure they are true (fresh surfaceing) & inspected before shipping, the price is 479.00 for the pare, shipping is 74.00 to me, the place is J&C Enterprizes, has anyone heard of them?