[BC] Antex Audio Cards

[Scott Mills]

Greetings,

Does anyone know if there's a market for used Antex SX-9 and/or SX-23 audio
cards? If so, do you happen to know what they are selling for? 

I have quite a few of them and an engineering friend of mine told me the
other day they were a hot item right now due to the number of owners trying
to keep their older automation systems running. I've searched the net to try
to put a value on these, but I can't find anyone else selling them.

Thanks for any help,
Scott Mills
Texarkana, USA