I had to run some errands today, so I stopped at a GameXchange that's a bit far away and picked up Captain America and Sonic Unleashed for the PS3 and Road Rage for the PS4. Looked in the glass counters and saw they had four Sony 3D glasses for assorted models of 3D TVs. I have a Playstation 3DTV, so I bought three of them for $9.99 each. One still had its USB cable sealed in plastic. The few times I ever come across Sony 3D glasses they tend to be $40 or more each, so I just had to grab these. One doesn't have any way to plug it in, there's a button battery socket on it, a 2032. I didn't know that was a thing, I thought 3D glasses needed charging. At least I know I'll have one pair of glasses that will work when the internal batteries eventually fail in the others.