Advanced Auto has ME-8 plugs? I saw them in a catalog at Farm & Fleet, but they couldn't get them. $12 is cheap. I talked to a dealer at NAMES and he said he has to order 100 at a time and doesn't get much discount from the $25 he sells them for. I probably have enough ME-8 plugs though. I prefer Rimfires for my airplane engines.
The Remco plugs are somewhat collectable, and often sell at this price. I was just hoping to sell them without Ebay. I run 1/4-32 plugs in my RC engines and these with the larger hex won't fit most of them.