@skierjp seems to me GM has done all the engine and emissions work already. All the boat manufacturers have to do is piggyback off of GM's technology, then Buy at bulk prices
I have no idea how much hazardous material fees are per boat, but it sounds like upwards of 20K+ per boat.
There was a thread awhile back talking about options on new boats and I remember how ridiculous they were, 400+ for a mirror option.
What I do know is if people are willing to pay the price, then people are willing to sell at that price.
I am pretty sure they know that they will sell X amount of boats regardless if they are priced at 70k or a 100k so why not price them at 100K, honestly that makes good business sense. Know your market