Costco has these again. $15.99 online. My local store (San Diego) has them for $14.99.
I missed them last time around so picked up a pair last week and they are great so far.
Sanuk Men’s Beer Cozy Flip Flop
https://www.costco.com/Sanuk-Men%…77076.ht
Sanuk Ladies’ Yoga Mat Flip Flop
https://www.costco.com/Sanuk-Ladi…77052.ht
These normally go for ~$30. I’ve seen them as low as ~$11 for only select sizes on Amazon.