Just checked, the new sommerfeld jig is $240. You can also buy the "tuning fork" fingers for it individually. It is still being made.
https://sommerfeldtools.com/profess...ols/jigs-and-guides/sommerfeld-s-dovetail-jig
Here's the product info.
The NEW Sommerfeld's Dovetail Jig is designed with single-plate technology instead of the variable-spaced dovetails. It is constructed with high quality aluminum, then clear anodized for lasting dependabiltiy.
The Sommerfeld's Dovetail Plate can be interchanged with any previoius Dovetail Jigs we have sold. *Not recommended for use with plywood.
Set Includes: Pre-assembled Jig w/
Sommerfeld Dovetail Plate
Two Edge Stops
7/16" Dovetail router bit
5/8" Pattern bit
5/32" Allen wrench
Manual
Dovetail Made Easy DVD
The DVD has lots of hints on using the jig, including how to mark the jig and the workpieces to avoid confusion.