I have a simple, easy to use Pentax Optima.
Good to about 8 ft, easy to use, small, about the size of a cigarette pack.
I have one for sale too
I've gone all video now, so I really have less use for it and the normal non submersed camera I have is small and has more features.
This one is nice and no worry about getting wet.
I do not know, they run 300$ new, so 1/2 that is fine/fair.
If you want to blow more $, you have to take a much large cost increase or do the bags. Or the plastic cases(even more than most cameras)
Regards,
Tom Barr