What does it cost to have a dive shop make a mask for those of us that need corrected vision?

For standard corrections - I paid about $40 (-5.50 in the left %26amp; -5.75 in the right).





If you don't need anything special, there are plenty of people selling online.What does it cost to have a dive shop make a mask for those of us that need corrected vision?
for a pair of competitive swim goggles i paid 200 hk/7.8 at the time so about 25. but in america its more expensive and the styles arent as great so look to spend 50-100 especially since dive masks are more expensive than compeition goggles.