I wonder what it would cost now.
I wonder where you would go to get similar quality too.
Around the year 2000, I had a local frame builder make me a touring/commuting/travel frame from the latest True Temper tubing with S&S couplers. I even adapted the Gran Sport's paint scheme... at least in the sense of having a contrasting head tube and two contrasting panels on the seat tube. The cost was $1600, and about $400 of that was the S&S couplers.
Even as a small frame builder, the quality was much better than the Gran Sport ever was, and the paint was much, much better quality! I think I had $2600 in the bike when it was built up....
This bike has dimensions that were evolved from the Gran Sport, including the fairly low bottom bracket. The top tube is a bit longer, though, and the chain stays were made longer to handle rear panniers. Less fork rake too.
Steve in Peoria