How "cost effective" does it have to be for the prices that Koaloha charges? Don't Kamaka and Kanilea use planetary or geared tuners on all their ukuleles these days?
Let's see, I guess Kanile'a and Kamaka are the main competition.
Let's also assume that using Gotoh UPTs add $100 cost to the KoAlohas to allow them to keep their gross margin the same.
Currently, Kamaka HF-1 is $1000, Kanile'a K-1S is $900, and KoAloha KSM-00 is $825.
Kamaka HF-1 comes with a hard case, assuming it is worth $75 (because it is a very nice case and you'll want a nice case to go with your nice uke), that brings the Kamaka price to $925.
Kanile'a K-1S comes with a soft case, assuming it is worth $35 (because it looks just like the $35 soft cases I see on Amazon), that brings the Kanile'a price to $865. However, chances are, you want a hard case for it, so truly you have to put in another $50-$100; anyway.
KoAloha KSM-00 becomes $925 with Gotoh UPt tuners. Compare it to Kamaka at $925 and Kanile'a at $865.
I guess the big questions is...
Will you buy the KoAloha at its new price?