I get the idea of having the controls set on ones bass and then just leaving them alone. I use an SF-2 and do a lot more tone shaping with that than with the controls on my bass. However, while a rare and custom bass (but aren’t ALL Alembics custom) asking $16,000 for an instrument with Signature electronics is way too high a price unless that specific bass meets every single one of your needs and preferences.
As far as import duties/taxes go, at least in the U.S. you don’t get hit with them if you are repatriating a U.S. manufactured product. I’ve purchased two Basses from other countries and not paid anything beyond shipping. I don’t know if that’s the case in other countries and in this case it wouldn’t make a difference but good information to know. Now shipping is another whole ball of wax. I was recently asked to ship some books to India for a colleague. I was astounded that UPS, FedEx, and DHL all wanted over $250 for shipping a box that was no more than 8” x 14” x 12” and weighed about 11 lbs.