If I were to say $300, what would you think?
Or I could do the same dive on the rebreather for about $30 in gas.
I never took a trimix class until I was a year into owning a rebreather. The only open circuit trimix I dived was bailout for class.
Stuff like this, getting on a boat expecting to do a 200' dive. Get to the site, conditions are not good. Off to another site, then another. Finally find acceptable conditions on a 130' site. Do you dive the $300 in gas? Sit it out and enjoy the boat ride? Rebreather, you just take the dive and not care you are using $30 in Helium that you don't need.