how far are you from san jose?
if you are still in HS join a wrestling team
look into judo vs bjj/mma for the price
got talk to some instructors in your area and tell them you are interested but have no cash.
also try getting in touch with a local PAL in your area. a lot of them have boxing/wrestling
another option for your area is trying to get in touch with some military guys (pendleton) and see if you can work out with any of them
$$$ should be the last thing holding someone back in the MA world
when all else fails i would get a cheap heavy bag (or make your own) and a grappling dummy. i would use the net to research and start practicing.
boxing and simple grappling positions are easy to practice on your own.
i would also start training like a fighter not a bb'er meaing O-lifts,sprints/plyo's and more sprints.
hope that helps if you need info on the bag, dummy or things in you area post or PM