Renting
Like an activation fee, a setup fee is often charged by places that rent space or other things. In the case of self-storage businesses, this negates claims of "only one dollar for the first month" made by Public Storage and others. Apartment complexes often charge fees for pets (mainly dogs and cats). Some complexes euphemistically call these a non-refundable deposit, ignoring the definition of a deposit as inherently being refundable.
Read more about this topic: Fee