Am I correct in saying a limiter correctly used will prohibit clipping (assuming there is none in the underlying tracks being mixed and before limiting) - I'm talking about the 'brickwall' type.
A limiter is just a compressor with a high ratio - 10:1 or higher. Brickwall limiters are limiters with an infinite ratio - although in my experience they're not always infinite, so I tend to master with a ceiling of -0.2db to prevent any clipping from overshoot.
FWIW in PG related products there is PGPeakLimit which is a very basic brickwall limiter.
Reaper's also works well, though there are better ones out there for little to no $$.
Waves has one a lot of people seem to like.
Ozone kind of makes most of them pale, IMHO .. but pricier
Agreed. Ozone is great, but like you say there's a cost. The free one in Reaper is good too, and the PGPeakLimit is perfectly fine. I'd suggest taking a look at the free bundle from
Kilohearts as it includes a good limiter, among other excellent and simple plugins.
Andrew, I would highly recommend that you pick up a copy of a book by Bobby Owsinski. It's called The Mixing Engineer's Handbook.
This is an excellent book and is well worth the money. It was recommended by my instructors when I was in a recording arts program and covers a lot of what they taught.
Or you can always ask on the forums here for help - there are quite a few of us audio nerds who are happy to offer guidance.