You can get a 55" 4k TV for $300

From Walmart.

Once I can get a 48” or 49” 4k for $210 or so, I’ll buy one. My TV is perfectly fine. I’d need a PS4 Pro. Does it have the auto ejecting constantly problem?

I paid $210 or so for my 48” TV, probably open box, don’t remember. Not an expensive brand, Insignia. Their TVs work just fine. Just change the settings.