The Music Emporium has what looks like a beautiful Collings tenor, (pre-owned, of course):
With highly figured, flamed mahogany tone woods, this ukulele shares in many of the sonic and aesthetic qualities we have all come to know and love in Collings guitars and mandolins.
themusicemporium.com
I've bought 2 ukuleles from TME, and found them very helpful, super easy to work with, and great setups. I don't know if they do any setups on used instruments, though, or if the Collings would even need one.