Perhaps a cheaper alternative for you is .. I have some but have not used it yet... In the automotive department of Wal Mart and different Auto Part stores, there is a grease called, SLICK 50 ONE GREASE. Other black powder shooters use it to keep their plugs from seizing. I think I paid $6.00 for a giant tube of the stuff that would last me the rest of my life.

I have used the high temperature Auto Anti Sieze grease. It works but is a mess. The stuffI normally use to keep my breech plug in top condition is CVA Slick Nipple and Breech Plug Grease. I bought two tubes of it last year and have not used up one of the tubes yet. I also bought a large grease gun tube of the SLICK 50 One Grease but figured to give it a try after the other stuff ran out...

Perhaps some shooter that has used the SLICK 50 One Grease could comment to this post as to how well the stuff works for them and how they apply it, etc....