Does anyone have an idea of the value of a set of Elite saloon SL rear shocks & springs please.

I'll be looking to move a set on at some point in the near future - all officially via the parts for sale section, but have no idea of what to ask for them.

The shocks are 76k originals from a '99 T 3.0 Elite saloon, but the springs were replaced at huge expense in 2007 at 59k. I'd also be happy to remove the sensor switch and compressor/pipes if a complete "kit" is worth anything.

Thanks - Rob