Secondary Market for Tritium-loaded Exit Signs?

[BergerIEM@aol.com]

Hello all!

Does anyone know whether there is a secondary market (re-sale) for
self-luminous exit signs?  If a company no longer has a need for these signs,
it appears the vendor will dispose of them for between $75 and $150 per sign.
 (That cost goes down if a replacement sign is ordered from the vendor.)
 However, the signs are in perfect working order, with quite a few working
years still left in them.  Is disposal the only option?  I would be grateful
to learn of any experiences any of you might have on this issue.

Happy Holidays!

Carol Berger
Integrated Environmental Management, Inc.
(301) 762-0502
BergerIEM@aol.com