The Mega4.5DD mask was around $200. The mask has a range of diopters it can correct for without contact lens. For my age (40+) it works without contacts from -4.00 to -6.00. Check out the link below for more info:
Diving Masks by HydroOptix -- Products -- 4.5DD Rx Conversion Chart
It also comes with some snap on lens (and a mount for your BC) for use above water
. Another great thing is that mask is incredibly clear compared to the plastic masks out there. I've always been afraid to dive with contacts because if I lose them under water
, I'm mostly blind. This mask is very reassuring for me in that sense.
I'm not sure if I believe this but the DM at the dive shop was saying that many people with near perfect vision have bought contacts just to use this mask. Who knows.....