You're buying a window into Sunday. Football, the halftime show, the movie you finally get around to that night. A good OLED should last you five or six years before the panel starts to dim and a new generation makes your set look tired. So buy once, on purpose, and you're done thinking about it until the next World Cup.
Big OLEDs hit the market on a yearly cycle, and last year's model is almost always the smarter buy once the new ones are announced. Late January is right in that sweet spot: the new models are out, the old ones are marked down, and you've got a Super Bowl deadline to aim for.
Heads up: the 0% intro APR is a clock, not a coupon. Pay the full $2,200 before month 15 ends and you'll owe nothing in interest. Leave even a dollar on the table at month 16 and the standard APR gets applied retroactively to the original purchase date, which is how a "free 15 months" quietly turns into real money.