We agree and make sure we take care of all our hay bales from cutting to customer delivery.
Hay quality is a critical for animal performance and adequate hay storage is a key to hay quality. Some hay damange can be expected, even when inside a barn, so risk management and mitigation are the keys to protecting as much of your hay bales investment as possible.
Here is a good article written by an expert from Texas A&M regarding hay, as an investment asset, preservation and storage.