How large an area? There are some very good bridge cameras these days that can do macros and table-view shots quite handily, especially if it is going to live on a tripod at the desk. I am not convinced an older DSLR with lens is either cost effective or better than some of the newest bridge cameras, or enthusiast cameras like the Gx series.
EDIT: I see you already got something. Just a heads up though, the 18-135 STM goes for around $200-300 on the used market (even if new, it will sell at a used price), and the printers sell for around $100-150. After all your fees and shipping, you might net about $350, maybe $400. So $400 + $350 mail in rebate = 750 minus the $1150 means the camera will be about $400, correct? Then you still need a lens?