I agree with Mark, we have used Sailcare in Ford City, PA several times and have been more than pleased with the results. The sails come back clean and are nice and crispy as well. Jerry and the crew do an outstanding job and do it relatively inexpensively. We had our main done this past winter, had a few small repairs done and as I recall it was under $300 including shipping.
The only downside is that the process faded the IP logo, however I did get replacements made from the sailmakers used by the IP factory for $70. The ship's store at the IP factory shows sail logos but they have been out of stock. The replacements are adhesive backed, can be made in any size for any size IP main sail and were very easy to put on.