Finding a high-quality DSLR on a budget often means looking beyond the "brand new" shelf. For the best value, you should target reputable resellers that offer certified inspections and warranties.
For the closest thing to "new" at a discount, buy directly from the source. Refurbished units are typically cameras returned for minor issues or open-box items that have been factory-tested and come with a manufacturer warranty.
& B&H Photo Used : These major retailers have massive used departments with accurate ratings and professional backing.