re: does anyone have a crab boil mix recipe?

what I want to do is be able to mix up batches as I need it and save money.

I often will boil a hamper of crabs about average of 3 times a month from may through January weather permitting to catch them, and it gets pricey buying liquid crab boil at $8 for and 8oz bottle and the bags cost near about $1 a piece plus salt. when you throw in the cost of potatoes corn hot dogs etc. it gets up around $25 just for the stuff to boil with

if I can cut those costs in half and make my own mix "as needed" then that would be a great help and probably even taste better too