The only truth out of the trolling and lies in the statement are quoted, '
Qled SAME LIKE MY OLD TV Cos yup; No matter how nice you want it to sound, it is fundamentally the same LCD technology with a backlight so it will be limited to the range that LCD which is no where near as black and cost saving. Just putting a black background allows you to save a lot of power on the OLED TV.
You've seen how this technology has been widely adopted in the phone market from Samsung, Google Pixel to Apple iPhone now using a form of OLED technology called AMOLED. That is why your phone won't die even if you have an always-on Display. Do you see any burn in on your phone? No? Yup. That is where I call out the lies in the rest of the statement.
$2750 and $180 makes it somewhere around the line of $2570. Try saying that you were quoted $2500 from the Best Denki at Bedok Mall. See if that helps.
Else, it is still a better deal than buying an LED TV such as the Sony X9000E. A mid range TV with full array local dimming however it still have a big halo around the area of the screen where there is something shown there. Also, the Sony X9000E is priced higher at around $2850.
If you have any 4K TV capable of HDR, you can try to a comparison by searching '4K HDR' on youtube on your phone's app and see the true blacks and vivid colours of your phone's AMOLED screen. That is a taste of what you will get with an OLED TV.
Compare it to a 4K LED/LCD based TV with HDR and watch the same video. Watch as the blacks appear a dark yellowish colour or a shimmering grey that is supposed to be called 'black'.
For anyone with a C7, press the Home icon on your remote and look for 'Dolby Access', Scroll down to Experience Dolby section below, and then choose the 'See. Hear. Spectacular.' video to see how they demonstrate what is the shimmering black in comparison to true Black starting around the 1 min 20 sec mark for funsies.