Proof of purchase a must for warranty repairs?

[Rnemhrd]

I had an OLD mm that fried, sent it in with a check for 50.00 and within 2 weeks had a shiny new mm. That is taking care of the customer. Buy Castle and even after the warranty is up you doe'nt have to pay full price for a new esc. I was also told the new one comes with a 1yr warranty, just to keep the reciept they gave me.