Unfortunately they are all gone now. They only lasted like 1.5 hours. I am using a chrome extension called Keepa to track amazon prices and give me notifications once the price drops below $35.
Here is the link:
https://www.amazon.com/gp/product/B07C5VG64V/ref=ppx\_yo\_dt\_b\_asin\_title\_o00\_s00?ie=UTF8&psc=1
https://smile.amazon.com/Noctua-NF-A12x25-PWM-Premium-Quality-Quiet/dp/B07C5VG64V/
They run out a lot but usually sell for MSRP.