Caps and helmets can be tricky and have caught me out a couple of times. 2 and 3 look good to me. 1 is likely good but would like to see more photos and 4 is weird to me but could be very rushed. Do you own these?
Very nice collection. They should all pass authentication for the caps and I would say JSA is best followed by PSA. Caps I've seen going as low as a couple of hundred dollars and as high as $900.
The market goes up and down as when there's an update on his health the market goes up and then it goes quiet again.