Question; is the MSC control an added charge for Seacam? Are there any added charges for controls on Seacam or is everything standard and included in the price? (Except of course the viewfinder) Are there differences in how cameras are priced and configured from country to country? Steve, is it even possible to buy a Seacam without some controls as standard?
Mary Lou is right, Jeff. The MSC is standard on the Seacam these days. About the only controls you could add as an option is the for the remote socket. There is a third bulkhead opening which can be for a remote cable release or video monitor. That could be an extra. The same socket can also be used for a new S10 bulkhead that wires a LAN cable to a computer. This is new technology developed for the pool venues at the Olympics for the D4, but it will populate throughout the Seacam Silver line-up soon. So. now you could put your Seacam housing on an underwater tripod in your pool, and sit in your loungechair with your laptop, drinking pina coladas while all those pretty girls swim in front of your dome, Jeff. You could even do local controls in Lightroom while they are still underwater holding their breath 
There are some inevitable differences from country-to-country because of variables like VAT, import duties, and exchange rates; but we find that with cameras and cars too so I don't think it is unique to Seacam.