3 gun match question.

I am relatively unfamiliar with the types of competitive shooting disciplines that are out there. I know about USPSA and IDPA. And know some of the basic tennets of their various "classes". What I have not seen though, is what I would call an IDPA style tactical 3 gun match. From what I have seen, the 3 gun matches out there seem to be more of an equipment race rather than an attempt to test the skill of the shooter behind the gun they would choose for self defense, combat, etc. Is there such a competition out there? I would like to be able to compete with my guns, without feeling like i have to spend thousands on them to be able to compete.