One guess would be that turbine guys go through about three thousand plugs a year, vs glow guys go through about 300,000. (both guestimates).

It would seem to me that we are such a small percent of the hobby as a whole, that making a special plug for us might not be the best R&D money spent.

Pulling the coils is easy, if you need some help getting it right the first time, I did a video a year ago, not sure if it's still posted here, but you can do a search.