What can I use for inexpensive metal/hi-build sandable primer?

I like Marhyde ultimate 2K also, use it on all my shit. Some friends of mine have been using stuff called European, that's the brand name I guess, supposed to be pretty good too and around the same price.

I've never used Nason fill primer but their clear is pretty good stuff for the price.

 

SPI southern polyurethanes inc. the best primers on the market I work with metal evry day and this paint is the best and thay have real product suport price is vary reasanble remember you get what you pay for this paint works

 

The website is actually www.smartshoppersinc.com They sell Kirker and HOK as well as a few others. They advertise in Rod and Custom for a full paint system (primer, paint, clearcoat, reducer, hardener) all for $219. Several people on here have used the Kirker products with good results.