Should I buy another flat screen now while they are still relatively cheap?

My 60 inch Pioneer Kuro that I still have and use daily was purchased in 2007... and  still functions and looks great!

OP I bought my LG 65 OLed 4 months after release 50% off. Texasblue1959 I bought 100. 

Following through with this mentality you should maybe think about other items that would also be affected. Why just the TV ? Don't stop there. Get a new refridgerator, dishwasher, washer/drier, AC units, new car.  Furniture is way more expensive than the TV and as you are suggesting, most items will be subject to increases. So why wait? Go for it.

Buy 10 or 12 of them.