Hey Wayne, i've had a few large parts (car bumpers and such) rechromed, and a number of large parts (truck wheels and such) powder coated, and i've gotta believe you can drop your set of trays off at a local shop and have them replated to better than new for $100. Perhaps don't volunteer that the trays are for an airplane.
Not sure about any impact the E.P.A. might be having on the east coast platers, what with the heavy metals issue. I guess the cost of disposal of the heavy metals caused a number of shops to close up. Seems we still had quite a few platers on the west coast last time i needed one about 3 years ago.
Might be worth a quick browse through the phone book for ya. I think it might be the way to get new trays for waaaay cheaper.
