if you look at the Pricing of new TVs, it's not that shocking...
right now I have a 2 year old 55" 'Smart TV' and a 4 year old 40"... Both 'off' branded... Both 'Black Friday Specials'... the 55 was cheaper, obviously larger, and had more features all within 2 years...
Before these two I Had a 26 and a 32... (had I not sold them to relatives, they'd either be hidden in a closet collecting dust or on a pile like these)