we purchased a gently used 2013 Libero (13,000 miles) in spring of 2015 for ~ $70K USD.
We have used it for 4 traveling seasons now, put on a total of about 30,000 miles.
Our overall average fuel economy is 12.6 MPG.
Leisure stopped building on the Chevy chassis after 2016 due to difficulty in getting the chassis from GM. The Leisure Serenity is the same "house" on the Mercedes diesel chassis (less tank volumes and less cargo carrying capacity than the Libero).
Not sure how many total Liberos were every built, guessing only in the hundreds.
When they come up used, they go fast.
We absolutely love ours. I had been researching RVs for years.
I knew I didn't want a diesel chassis. We don't need or want the overhead bed of a true class C. The lack of that bed gives the Libero much better aerodynamics and thus fuel economy. Class C's on the same chassis/engine of similar weight get ~ 9 MPG (again, we get 12.6).
Glad to answer any specific questions about the Libero.
2013 Leisure Travel Vans Libero
Chevy 6.0L V8 3500 Cutaway Chassis
Travelling With Black Labrador Retriever