Somewhere in all the postings on this subject I am almost sure that there is an article stating the reason why those gears are so expensive as Amel had a batch run exclusive to them. Hence the search for complete gearbox units as in the final analysis because they are more cost competitive.
I think that Eric has the US supplier details on record somewhere on this site.
I picked up your email only last week re. Seafever and sent replies to your two email addresses, did you get them?
Best wishes for a healthy and happy 2014.
Seafever of Cuan