Better hurry for your order there. Cuz' when those 10 or-so plugs are gone, there may not be anymore coming to Coyote Creek Outfitters.
All Black Diamond owners needing plugs will have a better idea of supply by the end of summer. Someone may start producing them in the spring, being this is primarily a short season product-of-use and that use is usually in the last quarter of the year.
So when Fall arrives, we should know if the breechplugs are gone forever, or if stores / T/C...etc.... have found a new supplier. Right now is the worst time for muzzleloader parts. (For instance) I can't find Winchester 209 primers anywhere locally right now. Everyone is out-of-stock and may not have them until mid-summer (July/August).