If it hasn't been used much, it probably hasn't been maintained, either. If you're not experienced enough to check everything out, get someone to do that for you, especially the roof, caulking, and all seals. Also check for delamination in the walls. It may not show up until the unit is moved. Water damage can ruin a unit and make it unusable junk pretty quickly. The appliances and stuff are all the same in these things and used units are available. I think getting in with a lightly used unit is smart. You get to figure out if RVing is your cup of tea or not... and do that without losing a ton of money on a new unit... that quite frankly may have more problems than the used unit you're looking at. Enjoy.......!
Jack and Dee Dee Weatherford, Texas
2014 Ram 2500 Crew Cab 4X4 w/CTD 6.7
2016 Jayco White Hawk 28DSBH Travel Trailer