https://www.amazon.com/Turtle-Beach-Heroes-Headset-Devices/dp/B00KVQQHNM
Amazon if you have prime, comes out to $30 total instead of $40
You can also use code 10TBTALK for 10% ($2) off.
Unfortunately for me, the cheapest shipping option is $19! So...pass. :/
edit: Also available on Amazon with Prime shipping for 29.99 https://www.amazon.com/Turtle-Beach-Heroes-Headset-Devices/dp/B00KVQQHNM