The 2nd edition came out last year, it's multiple volumes and cost around $10k. There were only like 2000 sets printed IIRC.
http://flyingcigar.de/startseite/mrn-second-edition-exclusive-pictures-final-info/
What you have is 1st edition, 2nd printing. The only difference between it and the 1st ed, initial printing are some minor error corrections. I've seen both sell for as much as $650 on fleabay.
Thunder.Gerbil wrote: