ARE Greg Hildebrandt's "AMERICAN BEAUTIES" Calendars collectible??

Hi all! I was just wondering if unopened Greg Hildebrandt's calendars have become collectible at all?? DH has one - 2015.....doesn't remember who gave it to him, but never opened it either. I checked ebay's sold listings....they only have just ONE and it's the latest one.....2019....for $35, which is more than G H is asking on his site!!!! Here's DH's: unopened, but the plastic on the back has a small tear in it......AND thank you for any further information and help!!!!

 

Check for the next time that year lay-out applies. Sell it then.

 

Thank you MOS!!