The least-expensive one I know of would be MAutoDynamicEQ when it's on sale (which it is ATM).
I would, however, only recommend it (or Pro-Q2 or Ozone) because it'll remain useful to you after you've figured out that EQ-matching doesn't work.
Well, I shouldn't say it
never works. If you're trying to match dialog or vocal takes recorded at different times or with different microphones, that's what EQ-matching is meant for. Sometimes it'll help you with guitar tones if you're already pretty close. But you'll quickly discover that it's a useless technique for mastering.