I picked up my Weaver in the $300 - $350 range as well. It shows why one needs to be an 'informed' buyer. One peculiar thing about this seller is that most of his other items are "custom" painted by the factory.
Mike, you got a good price on the K-Line Mikado. Prices of these seem to have rebounded to the $400+ area.
The other railroad, besides the Reading, that I model is the B&O. I've been looking for a Mikado for a while. My first choice would be the 3rd Rail model, but these almost never come up for sale. I had won a K-Line model last year with TMCC, but when I put it on the tracks it didn't run, so I sent it back to the seller. Still looking, though.
Jim