Another way to make the best use of your pellets, is fill the chamber with meat. Then freeze what you've cooked. Instead of using say a bag of pellets to do that brisket, you've also done a spare brisket and whatever else fits in.
This is what i do as often as possible. Cook multiple feeds at once.
I also use a 50/50 mix of gmg and maxiheat pellets.
Keeps price down and burns at a higher heat so doesnt need to cycle as often to hold temp.
I did a 19hr cook recently and used just over a hopper full of pellets.