Guys like Klaus, Jim Salk, Frank VanAlstine, etc. will do whatever is necessary to make their customers happy - and then some. Klaus is the last guy in the world I'd have any hesitation to buy from.
As was stated above, $ for $, the Odyssey room is really tough to beat. That system of the Loreleis, the Candella, and the Mono's would be a good value at close to twice the price. For what he's selling the Candella for, it's a steal IMO.
Bryan