Mercury didn't release pricing info for its new motors at CES, but it's a pretty good bet they will have that later this month when the Toronto Boat Show opens. I would expect it to be in the same range as its competitors (i.e. $3k to $4k) but that's only a guess on my part.
As far as electric aircraft go, some people may have missed the announcement last fall that Air Canada is buying 30 electric planes from Heart Aerospace. These will be used on short-haul flights ... Toronto to the Soo, for example. They're supposed to enter service within 5 years, so that's pretty exciting.
Widespread electrification is becoming reality, it's no longer just science fiction that might happen one day, maybe, perhaps, somewhere far off in the future. It's happening right now.
This year's CES was a real eye opener, it is amazing how much things have changed since before the pandemic. The number of electric cars, bikes, trucks and boats on display there was unreal.