You have to signup for 3 month minimum for $9.95 a month plus there may be an activation fee.
Sams and Samsclub.com have them for $29.95 (I believe the same as what CompUSA is selling DET 1), but these (at least 2 I took out of the box and tested) were version 2.54 (with Xtnd Off next to the version). This version allowed for multiple users (5 I think), but you could not change the settings which also means you have to use their service. The Demo was running version 3.03a (Xtnd off) which was only single user, but you could change the settings. Need to see if I can purchase the demo. These were ivory which I read from people you could change the settings. It has nothing to do with the setting, but what firmware is in it.
What versions are you MailStation owners running and what functionality does it have?