when i get a tv or a pc monitor, its good for atleast 2 years, than something new comes out that is unimpressive, at least for the cost. in 4 years, the monitors are getting a bit dim, but still very useable. though not sure i would sell it anyway. now at 5-6 years i would.
now lets look at this from a more practical standpoint.
if you are getting a tv right now, its stupid, to many emerging technology, like 3d that still doesnt have one set standard, and the promise of glassesless 3d "soon"
personally, i have a 18 year old harp crt that i used until it crapped out, and it was great, early lcds weren't better than it, even if they were hd. and plasmas cost way to much and were to big for my setup.
my first pc monitor i used for 6 years, than i got a new one and used it for 5, now im on a 2-4 year cycle.
now lets take a decent monitor. 300$ after at around the 1 year mark and you lose almost all of the positive reasons for this.
a 2000$ tv, if you are stupid enough to buy it now, they will make how much on the resell if you sell it back in 6 months to a year? may as well creigs list that thing.
this is takeing advantage of people who are stupid, nothing else.