The cost is I believe $45.00 a year and if you are at a truck show it is usually cheaper to join. Personally I would not be without it. We use OOIDA when we have questions about any rules or regulations, we pick up the phone and call Scott Grenearth ask him to explain what we need to know. We get Landline that has a lot of good information, and we support an organization that about 1/2 of the time we agree with that goes to bat for us lobbying.