Sounds like we need a group buy... I did new stock-size Delco rotors 10 months ago. Have put probably 3k on the 4R since (3rd car). They're already very lightly warped. That was a waste of money.
Not trying to interfere, but I'd not skimp on brakes. I concur with Audiness, the upgrade new costs about $300. I get Brembo rotors ($60 ea - Amazon). Bosch Quietcast semi-metallic non-chamfered pads ($40 - Amazon). Napa Eclipse calipers/Raybestos from Amazon $75 ea. Followed Big Fish's write-up on both my 4runners. They knock the fillings out of your teeth if you're not careful with the pedal -