Normal use and service is not a measure of time used, but more of how it is used. Pulling over rough rocky roads, hauling construction materials, home for 10 pets, etc. I do exaggerate a bit here, but to me, this is what it means.
Regardless, best of luck with the sale. You have a well spec'd trailer there.
2017 Escape 5.0 TA (someday soon, I hope
2015 Ford F150 Lariat 3.5L EcoBoost
2009 Escape 19 (previous)
“Most folks are about as happy as they make up their minds to be.” — Abraham Lincoln