What is the best DSLR camera with a lens for 500 dollars or less?

Some of the best DSLR's under $700 are:

Canon rebel T4i

Nikon D3200

Sony Alpha 65

Canon 600D/T3i

Canon 650D

Canon 60D

Sony Alpha a37

Nikon D3100

Nikon D5100

Sony alpha a57

I hope my answer will help you!