Personally I've found that "well curated" sometimes becomes a double-edged sword in Costco's case. Mainstream brands can be expected to be available perennially; however, smaller/niche items and brands will often get cycled out or replaced by something else which may or may not be comparable.
Many times I've found products at Costco that I enjoy, only for them to suddenly stop carrying them a week or a month later.
Many times I've found products at Costco that I enjoy, only for them to suddenly stop carrying them a week or a month later.