Cheap combo help

[Hickoryhead]

I need a cheap brushless combo. Motor and ESC. I want it cheap. I know what your thinking but I need it cheap. I am donating a buggy to a kid down the street from me who was in an accident recently. He enjoys watching me play with mine but he is hard on his toys. If he keeps it going his father will upgrade later on. SO keep the suggestions cheap. Buggy is a Ofna MBX R2. Thanks guys.