I've found a couple examples of similar RV's. Found some shipping and setup costs, and tried to put a number on the convenience of the location and setup.
Here's a unit nearly identical to ours. Same year and model. It's selling for $30,250.
https://www.rvtrader.com/listing/2018-Forest+River-Heritage+Glen+312QBUD-5021836929
Delivery from New Jersey would be ~$3,975 (industry average is around $5/mile for delivery and setup from what I can find). Ours has slightly fewer miles and a few additional options, so I marked ours up $750. We're going to leave the patio furniture and storage shed on the lot for you, and figure that would be ~$750 to replace (Shed is less than a year old, and patio furniture are nice powder coated cast aluminum pieces)....Total all that up and we're at $35,725.
I found another unit that is CLOSE to ours, but a year older and not quite as nice finishes. It's in Virginia, and would take ~$3,350 to get delivered and setup. I added a $1,500 markup to this one to adjust for condition and features.
https://www.rvtrader.com/listing/2017-Forest+River-SALEM+HEMISPHERE+LITE+312QBUD-5025350588
same $750 for patio furniture and shed. This one totals up to $34,100
There are a couple others that are selling for less, but they are further away (increasing setup and delivery fees, or have significantly less options or light damage to repair.
I talked it over with my wife, and we'll drop to $34,500 based on what we found here, and think that is a pretty fair deal considering the location and condition of our unit. Take some time to think on it, and we can discuss more if you like. I think once you see it on Saturday you'll find it to be an acceptable deal.