Can I get a credit or refund if I bring back materials that I thought I lost?

Question: 
Can I get a credit or refund if I bring back materials that I thought I lost?

Patrons may be issued credit or refunded the replacement cost if the complete item is found and returned in good condition within 90 days of payment. Credits or refunds will not be given for single parts of a set.

Credit will always be applied against any current fees on the patron account. Standing credit for less than $20 may be carried to apply against future fees. Credits and refunds will be issued to the individual cardholder and are not transferable to another patron or account.

Refund checks will be issued for amounts greater than $20.