Less than an hour before you posted, there was an excellent one for sale at a really good price. You might contact C America if you are interested:
https://forum.ukuleleunderground.com/showthread.php?146556-FS-great-Kiwaya-KTS-4
I had to buy my Kiwaya soprano from the UK. I bought a KTS-7 from Matt Stead at The Uke Room. I received it in 5 days!
Wow! They're that scarce? Did you have to pay Customs Duty and Sales Tax on top?
Yes, I did have to pay customs duty that was quite a surprise to me. I got a bill from FedEx about three weeks later. I did not pay sales tax but I did pay for shipping. So there was definitely a premium but the Kiwaya KTS-7 was more than worth it to me. I did get a nice discount from Matt Stead at The Uke Room to offset most of that cost.