Not exactly a group buy, but they're having a special sale on their website, as much as 40% off, thought I'd share it.

www.clorders.com/measurementspectire.htm
or
http://64.4.8.250/cgi-bin/linkrd?_lang=EN&lah=afc4257f816911d366c3ce60f5103fcb&lat=1044020833&hm___action=http%3a%2f%2fwww%2eclorders%2ecom%2fmeasurementspectire%2ehtm

I just got the MS-4000GB for Xmas. It works quite well for anyone that's interested. Nice bright LCD.