I agree they usually don't give this stuff away but **** I bought a used Grizzly 4 wheeler, a new Pioneer 500 for my employer and my AT all within 2 months last July so I think that is why they gave it to me. There very well made and should last a very long time. Good luck selling them.If I had the space, I wouldn't be selling these.
You are lucky that you got yours for free.
If they don't sell, I may try eBay.
Anything is only worth what someone is willing to pay. If they are not worth it, then no one will want to buy it.
The market will end up dictating the price.