If you want to "stay small", which is what I did when I made a CD some years ago (just wanted to cover my costs, really), it doesn't cost that much to get a licence to produce, say, a couple of hundred copies or fewer, as long as not too much of your stuff is copyright. My MCPS licence to cover 100 copies at £8 each cost twelve quid (that was in 2004). That covered two or three tunes and one song that were copyright, the rest of my stuff being "trad arr" as far as I could humanly discern (I did try hard). Hardly enough to put the fear of God into one for doing the right thing.