I am selling my gyros which have been used about 5 times so are in mint condition. They come with an Optical support mounting system for the GPI Pro HD sled (may be compatible with other Pro sleds but Im not sure).
The kit includes:
Peli case
KS6x6 gyros
DTap power cables
Pro power cables
Inverter
Camera mount plate
OS Pro HD sled mount (optional)
Documentation
Price is £3800 + VAT & shipping
New price around £5000 + VAT