The update itself is free, but mapnsoft charges for the flashdrive which is about $30 shipped. you can order from::
https://www.mapnsoft.com/kia/
There's supposed to be a download option for free as of may 15th, this still hasn't happened for US Tellurides, I seen on Stinger forums some saying they got access.
I've also read some saying they were told an incremental patch is in the works for July and the download option is begin held up until then.
Also possible your dealer might have it available, if you have a service appointment coming up guess you can ask about it, as for what they charge, well it's the dealer...