I have a TH-42PX50u 2005 model. It has 49,000 hours of use on it and just recently started to go. I'm in the process of fixing it but after 15 years of heavy use (two kids etc) it's the best TV I've ever had. Even though I have a brand new 4K Sony A8G, which is stunning, I still miss the picture quality of my old 1080i plasma.
$50 is a great deal. I was looking for a used plasma when mine started to go but all I could find in local pickup and there are none close to where I live for sale at this time.
Sony 2019 Sony XBR-55A8G
Panasonic TH-42PX50U - 49,203 hours! DIED :-( then resurrected by me on 1/16/2020!!!!!
Various "cheap" TV's in kids room and video game room.