Erie Vovo? We once bought a used "red engine" from them as they even guarantied labor if it was bad. Was told "30K miles" (right), was repainted over the dark, peeling paint and it had very loud piston knock so they had to send us another. We won't try that again.
If you go used and you pay someone to do it, be sure that whoever sells the used engine will pay replacement labor if you get a bad one because you never know what you're getting and they'll all tell you that it has low miles. If they don't pay labor if they sell you a bad one, you'll have to pay again as no shop will just "eat" the labor time. That's always a possible issue when installing used parts and you'll have very little (if any) parts warranty, maybe 30 days.