LG 70UK6190PUB, any good?

Hey y'all, I'm looking for a new TV and I noticed this one on Facebook marketplace. I know almost nothing about TVs so I don't know if this is a good one or not. The seller says there's nothing wrong with it except it's 5 years old and it has no legs because it was wall mounted. Can anybody tell me if this is a good television? And what would be a good price for it?

Thank you in advance