IMO, not worth it at $250 per bike. Not even 250 for both.
The group is a very good set of components, but not that good to part $500 for.
Unless you must have a a NOS set of them.
I started down my slippery slope of biking with a 600EX crankset! In 1980, from Bike Warehouse for $39 new w/ BB. 52x39 and 1-key release.