Phil,
I realize it might not be the "official" S&S case you are seeking, but I have heard of and seen other sorts of suitcases working to hold S&S-equipped single bikes. As I recall, there was one model/edition of a Samsonite case available on the market not long ago that did a wonderful job. The model designation escapes me at the moment, but I remember it came in a bright yellow, red, or orange color and was much less expensive and just as protective. I believe the dimensions were 26"x26"x10". If I can find a link, I'll let you know.
Just thinking, it might open some more possibilities for you....
This isn't the "cheap" one -- the prices for most are staggeringly high in my view -- but the packing instructions are interesting:
http://www.sandsmachine.com/ac_hard.htmAt that same link, S and S Machine (makers of the S&S Torque Couplings) have some cases at blowout prices -- less than half off -- with no warranty. US telephone number for inquiries is: 916-771-0235
If strict size isn't a requirement, S&S also have a 12" Edge pull designer hard case, Designer Style for USD$195 "as-is" (reference retail is USD$450).
Co-Motion has some helpful information to keep in mind when selecting an S&S-compatible case as well:
http://www.co-motion.com/index.php/information/faqs/which_travel_case_should_i_buyBest of luck in your search,
Dan.