You may want to try this company:

Morgen Industries, Inc.
501 Penhorn Avenue
Bldg. 1
Secaucus, NJ 07094
201.223.0072 ext.113
201.223.0073 fax
914.419.3954 cell
www.morgenindustries.com

They buy and sell older phone systems. They are the ShoreTel prefered company to work with. When I was on the phone with them last week and he mentioned he does get used ShoreTel equipment in.

Justin Phillips
Business Telecom Consultant
Rochester, MN