Friends of mine, over the years, have found useable new (unused) sails thru their sailmakers. Occasionally a loft will have a sail on hand that, for any number of reasons, was rejected by the customer. Often due to a mismeasurement. The big national lofts will have a list of these sails available to each local service loft. They might have a sail that will fit your rig, or fit with an inexpensive recut.
Kind of long shot, but it helps to spread your net widely, as the saying goes.