Fair Price for Cradle Ride Contessa Trailer?

I have located a Cradle Ride trailer, model P5500, that appears to be in excellent condition

It was made in 2004 and used to haul a Contessa 26.

The current price for a new one was $5,885.00 in June 2014.

In my other areas of interest I usually buy and sell stuff in excellent condition for about 50% of the cost of the new item.

Does that seem reasonable in this case or might I be overpaying if I offer $2,900?