I replaced my main last year and used Eric Taylor (Taylor Sails) in Port Angeles. Most new sails are built offshore: Precision (China), Rolly Tasker (Thailand), and Quantum (Sri Lanka). Labor is just cheaper offshore. You can build any quality of sail you want, using the same sailcloth and hardware as more expensive lofts. I used him the year before when I bought a new Tri-radial furling genoa too.
I used Taylor Sails to measure the sails, consult on the features (# of reef points, where they should be, luff hardware, foot attachment, etc), and develop a CAD drawing of the sail for my specific boat. He then placed the order through Durtek/Quantum in Sri Lanka. When it arrived, he added some hand work on the tack and clew and generally QC'd the sail. Then he came down to my boat and helped bend it on. I saved a lot, and got a great sail that he will stand behind even though it was produced offshore. Others in the Northwest do the same, and I found it to be the right price/quality balance for my purposes (busy daysail charter boat).
If well designed and constructed, new sails are a game changer in terms sailing. Beware of cheap sails that you just order online without seeing a 3D version of what the sail looks, and shapes, like on your rig. I have a friend that ordered a new main that way from a loft in Asia and it was a terrible sail.
Hope this helps,
Patches