I'm interested in fees charged for loaning collections items to other institutions. Here are some of my questions:

How common is this practice? If your institution has a loan fee policy, do you have a standard fee, or do you assess it on a case-by-case basis? If you have a standard fee, what is it? Do you ever waive the fee? Conversely, does your institution charge a fee only in certain circumstances, and if so, what are those circumstances?