Samsung 55″ 4K Ultra HD LED LCD TV 8000 series – Costco $679.99 + Tax, free shipping

Samsung 55" Class (54.6" Diag.) 4K Ultra HD LED LCD TV
Model #UN55MU800DFXZA
Features:
4K HDR Extreme
4K Color Drive Extreme
Triple Black
Motion Rate 240
$100 Google Play Credit
https://www.costco.com/Samsung-55…50541.html
I just bought one. Is this a good purchase?