Gustave

Hello, This is my first post. I have a Milwaukee power caulking gun which I love. I recently converted it to sausage gun style for a home build we are going. I have never used sausage tubes before. Are the sausage tips supposed to be reusable? At $12 each per tip, seems a lot to just use once and throw away. Is there a cheaper brand of tip I could buy? Don't know if these things are universal or brand specific. Thanks very much.