FS - AirHawk IST Air saddle, R1250RT

Selling a Danny Gray custom AirHawk seat. It is an IST Air seat, adjustable air cushion. Non-heated seat.
This seat was installed and test ridden on my 2019 R1250RT for a few miles, otherwise it is like new. New price is $515. Asking $400, all offers considered. Thanks!
https://airhawk.net/airhawk-seats/
https://airhawk.net/product-category/seats/
https://airhawk.net/product/2014-present-1200-rt-bmw-motorcycle-seat-ist-low-with-air/