>>306523704
>Does your replacement get a warranty too?
according to the valve hardware warranty
>This Warranty applies, to the extent permitted by law, to any replacement Hardware for the remainder of the original Warranty Period or for ninety (90) days, whichever period is longer. All replaced parts, and all Hardware for which a refund is given, shall become the property of Valve.

FWIW I've gotten advanced replacement on 3 controllers and 1 headset, no questions asked. I think you just have to be polite in the ticket, and get lucky that the support person isn't having a bad day when they look at your ticket.