Brake rotors

I have the luckeep X2 and my front brake rotor is warped slightly and it rubbing a little bit from it falling during installation. I'm looking for new ones for both and my front and rear as the rear also rubs in one part. They are 180mm and 1 piston hydraulic. I'm hoping to spend at most 60 for both, if that's not possible that's fine i can buy one at a time. Thanks