My solar blanket is starting to shed those contact-lens circular plastic disks. I figure it's time for a new one. I paid about $50 three years ago. The one I bought (Sun2Solar Blue 21-Foot Round Solar Cover | 800 Series | Heating Blanket for Above-Ground Swimming Pools) doesn't seem to be available anymore. The ones that are available are 3x as expensive at least. Has COVID led to the great 2021 solar blanket shortage?