https://r2-bike.com/SHIFT-UP-Thru-Axle-15-x-110-mm-for-SR-Suntour-BOOST
By the time you pay shipping, exchange and duty, that works out to ~$150. and the Roberts Axle Project version has weird ends for attaching panniers and is not much cheaper.
For that amount of money, I would rather buy something locally custom made, but that would probably mean, to get the cost less than $150, would be to pay for ten or more.
Besides Andrew, who else is running Suntour around here?