RE: Merlin Glow Plugs, did me right!
I ordered plugs specifically for the Jett .50, OPS .65's, and K&B 7.5's. Plus a couple for other stuff.
Considering what we have to pay at retail up here at the LHS for other brand name plugs (land of the $14 OS "F"), I was happy to shell out $4.95 - $5.95 ea plus $7 shipping.