justCNCit,
this is not intended to be a rant, but more of an explanation as to why I didn't buy them myself.
I looked at Ahren's site a while back and determined that the bearing blocks shown there are fine for the builders who don't have a mill or where a standardized block shape will work ok, as with the 8020 extrusion machines. The price is very reasonable for the amount of work involved in making them. I didn't see any note that Ahren will make custom shaped blocks for other machine designs.
Had there been a set available for the plans I'm building from then it would have added more than $100 plus shipping to my build cost. My bearing blocks need to be differently shaped, and I can mill them myself from the aluminum stock I already have on hand, so I didn't order them. I think that any low sales is not a quality or design issue as much as there will be a more limited market by not having available a small selection of kits for the more popular machine designs in addition to a standardardized bearing block for 8020 machines.
CarveOne
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