I'd have a serious problem with buying the 12S for a young "reformed squid" off the ebay/craig's list. The age of the seller can be a clue as to the abuse the bike has been given. Jeff Williams is of course the glaring exception to this rule.
Don't think I've ever bought a bike from a person less than 50 years old and that covers BMW, Ducati and Harleys.
Just a question A6. Do you rust the guy that set the load on the Dyno for your bike?