Check out Thinkscripter and Big Mike.
You have to be a donating member to get some of the stuff, but there's
lots of free stuff there as well (I'm not sure how the donation stuff is because I didn't).
I find TOS indicator programming a pain, but those sites have some good code that you can probably tweak to make whatever you want.
Also, the Ninja Forums have a ton as well.
I would think long and hard about paying for any indicator...if you find something that does exactly what you want but simply don't know or have time to code it, then a very qualified maybe (time is money, after all). But if you hop on to some website and see the "NEW MAGIC OMNI-TREND-DEFIBRILLATOR ONLY $289", I'd just go and read Onion articles until that purchase feeling has passed.