Ouchie...but I guess not a huge surprise. Hard to find those tubes at such a competitive price. He also might be selling down his inventory and can sit on it for a while more. Hopefully he gets more and lowers his price again. Heh.
It'll be interesting to see how it translates in your speaker rig. Works nice for the LCD-2 headphone rig, but wouldn't surprise me if that isn't the same with your Magnepans.
Congrats. They're still my fave headphone. It's not for everyone...spoke to a few people at the Seattle meet that just don't really dig on their sound sig...but haven't heard anything that I really want more right now.