Howards Cams has an advertisment and photo of their Pro-Max lifters in National Dragster, Issue 43, page 12 (Nov 13, 2009).
I also have the Competition Products catalog, which I believe is the same company as Howards Cams. The lifters list for $581.96 with off-set intakes for a SBC. Which is a decent price for top-end lifters.
Warren