How much are they where you are looking? A proper sale price if they are in pristine condition, have boxes, and manuals I would gander about $1000 or less. The retail for the system was around $3500 or more. There are two systems listed as such in Blue Book. The models are System 350 THX and 350THX System.
The 350THX system is less than the other one, it only catches just above $400 and retailed for around $3000.
