Devices have to be signed out of the previous account and free of activation locks. That is not paperwork for its own sake. An iCloud-locked phone or a console tied to an account cannot be resold, so no licensed shop can lend against it.
Cameras, lenses, audio gear, consoles and televisions are all routine collateral here. If you are unsure whether something qualifies, call before you drive over. A two-minute conversation saves an afternoon.