Here's What I Did...
I blew out a 2 ft. section of leech last October. Kerr sails is here in Tulsa so I took it to him for diagnosis. He said it was brittle enough that sewing in a patch would likely just lead to tears elsewhere. He put a sticky patch on it and said good luck. My main was 21 years old, it had served a noble life...LOL.I got four bids for a new main. One from the local loft (Kerr), North, Doyle, Island Planet in Oregon (Tasker), and compared on-line pricing for my boat from Sail Warehouse and Kelly-Hanson. I sent email bids to the four lofts all with identical criteria to make sure they all were bidding the same thing. With the exception of North who was insisting that I buy a loose-footed main and they didn't want to sell me anything else, everyone offered the same thing.Many on-line retailers of sails are marketing off-shore sails which, despite other's comments, doesn't mean that the quality suffers. Price isn't always a reflection on quality. If it's important for you that your sail carries a particular builder's insignia, then so be it.The C-25 is such a common sail plan, I don't think you will have trouble finding a quality sail at a good price. Catalina Direct has very good pricing on most of their items, but don't neglect to check out other lofts and on-line retailers.