Just had ARC repair my new 150SE under warranty... and... the service was excellent and very responsive!
Although, it was a very minor repair (which I likely could have completed myself) - tightening a speaker terminal on the back - they completed it within a couple of days of receiving it, and returned it.
With the quality of the ARC products and their responsive service - I would think their products should be in great demand. You would be very fortunate if you find one for a good price.