http://www.ebay.com/itm/old-used-tools-rcbs-2-cavity-bullet-mold-38-150-swc-bb-excellent-condition-lot-9/202054960236

Randomly found a seller on ebay with a whole slew of bullet casting molds for sale... I don't know if his prices are any good or not, but figured y'all would find them of interest...

Thanks for the link.

One other thing to note...This seller doesn't appear to know what he has.  For instance, in the linked auction, the description is a "38-150-SWC-BB" which would be a .357" 150 grain semi-wadcutter bevel base mold.  The pictured mold is actually a .356" 115 grain round nose bevel base mold.  It should work fine for a 38 and with 150 grain data, but the description and the pictures don't match.

Another mold he has listed as a Lyman 29421K, and to be fair that is what you can read.  But anyone that is a serious bullet caster will immediately recognize the iconic Ideal/Lyman 429421, the bullet Elmer Keith designed. The leading 4 is just not legible due to a mfg detail on the mold.

And, I tend to agree with coelacanth, the price is a bit high.  Most of these molds a kinda dog-eared and most are still cataloged items.  You can buy them new for around $70-$80.

I've become a believer in Lee's aluminum bullet molds.  They heat up faster, they hold the heat better, and the bullets usually only need to be lubed (as opposed to lubed-and-sized) to be usable.  And I can get them in 6-cavity persuasions, which makes it lots easier to cast a bunch o' bullets in a hurry.  And you don't have to beat them out of the mold, like you do with steel molds.  On a good day, I can go through 50-60 lbs of former wheelweights, and have a metric buttload of heat-treated .45 ACP, .45 Colt, .41 Mag., and .38/.357 bullets.

I'm sure this guy's molds have some collector's value, and I hope he gets what he's asking for them, but they just don't impress me very much.

Lee sold me on Aluminum molds as well.  And NOE makes the aliminum molds I want, with enough cavities to keep up with an auto-loader.
 

^This^   A lot of folks like to bag on Lee equipment but there's a good bit of their stuff that works as well as anything out there - especially when the price is factored in.

Yeah, some of their scales aren't self-dampening, and their powder measure (at least the one I saw in action) was iffy, but their die sets and bullet molds are just fine.