I still like Raammat and it should be within that price range. Rick is a super standup guy. If you need the cheaper stuff, elemental designs is a tad cheaper, but you get more value from raammat IIRC.
Rudeboy or Rudy as he goes by on here wrote the sound deadener showdown and from what he has mentioned, I think he is going to update it. Maybe if he is around he will step in and give his 2 cents.
That foam insulation might be good to put over deadener, but deadener and insulation serve two different purposes. One is about adding mass, while the other is about absorbing and isolating.