A half pound would be for quite a bit of sausage, I think for 25 pounds. How much pork did you use it for? It's the same stuff they use for supermarkets. They also have Italian Hot and Sweet Sausage. They have several breakfast sausage styles and I think the #10 is the most popular. Be sure to let it sit overnight before cooking it. Fat content is also important. The 3-2-1 rule of sausage is to use 3 pounds lean pork to 2 pounds fat to 1 pound ice.
The other company I order from is SausageMaker.com. I use their Landjager seasoning for dried meat sticks. I just did another batch of 3 pounds of sirloin which was 28 sticks. I use a LEM Jerky cannon to fill the casings, let them sit overnight, the hang them in the oven to get them over 165. Then they last a month in theory, but they never last that long. A two pound tub of seasoning for 50# was about $10 and then dry casings were another $10. They end up costing a bit less than a buck for every 2oz stick, or about half the price of buying them and I can do my own recipes.
http://www.sausagemaker.com/Default.asp
Generic Poultry seasoning is very close to a breakfast sausage blend without the salt. Mostly Sage. I can get Leggs here for about $4 a half pound. I'm going to give it a try.
I love this guy.. He always sounds like he's just about drooling while he's talking about making the snacks. What I do is measure out enough casings for four sticks, tie a knot in the middle then fill from the knot on both side halfway. Then I flatten it out enough to get two sticks per side and twist into four links.
[video=youtube;ewI1tQq5CZ8]https://www.youtube.com/watch?v=ewI1tQq5CZ8&list=PLr36gmrmHXjsj_P3LudZzqvobqtlaLzeg&index=4[/video]
Also, when you make sausage, you have to kneed it long enough to encapsulate the fat with a protein layer. You kneed it until it's sticky, then add in the seasoning. Try to keep it cold the whole time.