ISO golf aids that work
 

do any of those televised golf aids work?

I only play a few times a year, but I could go from 110 to under a hundred if I could just get rid of a every third hole slice during tee-off and could drop the ball on the green more often than not with just one shot from 20-60 yards out.

also, how much can i expect to pay to get a coach to work with me and what should I look for?

There might be a few that really work, but other than practice and or a coach, I wouldn't purchase them. Go to any driving range, and they should be able to give you more details. If the person is a PGA pro, they can help a lot. I would mainly say practice is your best bet. If you can hit the driving range twice a week, work on putting and chipping, then get help, that would be the best thing for your swing.

Actually, I would really get a putter that you're comfortable with and practice as much as you can. By turning those three and four putts into birdies, pars and bogeys you'll save yourself a lot of strokes. After all you use your putter every hole, but you might ouly use your driver or three wood off the tee a few times a round. Lately I've actually been hitting a 4 iron off the tee a lot to keep it straight and in play.
I would also look into a couple lessons with your local pro and then try to really practice what you learn from them for good consistantly. I'm really more in the same boat as you as far as consistently getting under 100, so I've looked into this question myself.