how wide is the frame? can you fit an 80qt, 105qt, or 120qt cooler in it?
If in good condition, you are happy with the size etc. I'd offer $1700 and probably get it for $1800. For weak comparison sakes I recently sold a pair of good condition (one patch) 14' NRS tubes for about $1300 and sold a great condition 5 year old 16' aire lion and NRS frame (no oars) for $2300.
Hey, if you want me to take a dump in a box and mark it "guaranteed", I will. I got spare time.