We bought it!
I almost forgot to update everybody about this. We saw the eBay auction and bought the whole set of trim for $50. When it arrived, it was in pretty good shape. I know our trim was cracked after years of UV. This trailer must have been under cover its whole life. It had some dirt, but the actual trim was GREAT. Below are some pictures of our 6-Metre Minuet after the new install.
So...you bought a vintage trailer, did you, honey? Good deal, was it? Oh, just a couple of repairs, huh?
Drat, now our little Argy is starting to grow on me. I guess you were...were...were...right, honey.