RCBS & Lee have never made any HP molds that I can recall.
Lyman has all but quit making HP molds too.
My last 2005 catalog lists only three single-cavity molds.
#356637 125 grain 9mm bullet.
#429640 250 grain gas check .44 bullet.
#452374 180 grain .45 bullet.
I don't think they ever made a 9mm HP mold specifically before that, as when they were making HP molds, the 9mm was dad's old WWII Luger or P-38, and it wouldn't feed them.
My experience with them many years ago was, they aren't worth the trouble.
If you use soft enough lead to get them to expand, they don't fill the mold and cast good bullets.
Harder alloy either won't expand at all, or the nose section shatters and comes apart like shrapnel.
Not to mention they are very slow to use due to the separate HP plug in the mold having to be pulled, then get the bullet off of it, then put it back in the mold again.
All the while, the mold is cooling off and won't throw good wrinkle free bullets again.
Your best bet might be watching for some of the old Lyman HP molds to show up on Evil-Bay.
rc