I bought ONE new Nelson 36 sometime around 1987, when Henry was still making them.

A few years ago, somebody commissioned him to make another run of 36's from his stock of parts.  Those were pre-ordered by Fast combat flyers.  There has been a revival of Fast by a few die-hards using planes built by Yuvenko. 

The chances of anybody parting with a Nelson 36 are slim.  But you might find somebody who's selling.

Not only found 2 new ones but 3 new ones

Mike

You did well.  Getting Nelson 36's is not easy.  I saw a posting of several Wiley engines which are Nelson copies.
The original price was $275 and the second issue was $400.  I won't ask what you paid, but that's an accurate base line.