Dried sage, not sure if cheaper, made a couple from venison/pork from recent hunt, pork was from 1lb ground. Something to play with, market sausage is kinda bland, Owens & others not bad but again, something to play with for taste.
Not a bad idea making your own sausage...can't eat the store bought stuff because they use too much salt. Our local Amish market has a dozen or so different makes and if you are there during lunch or dinner hours they have free samples. Tasty stuff, the Amish are great folks.