Here is your competition:
2015 Four winds, 5,000 miles $60K
https://www.rvtrader.com/listing/201...28Z-5002298225
There are SO many used RVs out there. We sold a similar RV a few years ago (same age 3-4 years) and got $40,000 for it. It was a 2000 Gulfstream 30' that we had paid $57k for 3-4 years earlier <20K miles, used for two extended trips ~60 days. The unit was like brand new as we never even used the toilet for solids and it was covered in California for it's lifetime.
Good luck