Oasis charges a bit more than some of the others - that said, they do very fine work. One of their extra services is to include your cut on a compilation CD sent out to radio stations. Great for singer-songwriters but I don''t think it matters a damn for singers of traditional music. You're going to sell by contact, not by radio promotion.

I use US Optical in Sanford ME. They have an associated printer which will make the inserts from camera-ready artwork, they press the CDs, put them in jewel boxes (which I prefer to some of the modern fold-out packaging, uniform, easier to store on my shelves, etc.), shrink wrap if you want them. They do have a minimum pressing of 1000 copies. Oasis may do a pressing as small as 500 (they used to, I think, though they may not do such a small runb anymore), but the total cost is not going to be that much lower than for a pressing of 1000. All prices have gone up with the increase in oil prices.

Again, with a cappella trad music, you do want it mastered, but I don't think you're going to gain a lot by spending top dollar on, say, one of the Nashville mastering houses. There are people around who know how to do that sort of thing and I don't think they're hard to find. You need somebody who understands what you're trying to do, and it's got nothing to do with creating the "right" sound for good airplay.

There are small US companies who do get their fabrication done in Canada, (e.g. Folk-Legacy, I believe) but I have no experience with that.