Hi, hard to say what shape the equipment is in, but you can look at comparables on Parelli's website. I would suspect around the $150-$200 range would be reasonable. Best of luck!
how used is it? make sure the dvd's are not scratched too much.
Depending on the condition of it I would offer around $150....you can no longer buy them because they are discontinued. I think they sold new for around $300? hope this helps.
Check on Ebay for a reasonable offer. The Parelli items do seem to hold a good re-sell/used price. But I think EBay would give you some good insight on the value.