The Pierburg pump for my 602 was about $240 or so from epsparts.com last year. I believe Pierburg is the OE supplier for these things. Replacement was not too tough, use the blue hylomar as a sealant for the gasket. If you get the "old-style" metal gasket with a large area that is designed to act as a dam for the oil, you can "update" with a tin-snipper.

From what I hear, the gasket the dealer sells is not metal and does not have this "dam" feature. I was too lazy to run and the "special" gasket, just modified the one I got in the box.