Arrowshooter, In most cases, returning a hearing aid must be done within a trial period that is explained in fine print in the contract. The VA may have a different policy, which is wonderful. Most states mandate a minimum of 30 days trial; some may be longer. It's up to you to ask about this when you try/buy a hearing aid. You'll likely still have to pay the cost of the testing/audiogram, but that may be covered by insurance. Regardless, that document belongs to you. Be sure to ask for a copy. If you end up going to a different provider for any reason, and your audiogram is current, you may not have to pay for another one.