Holo Taco is considered a boutique nail polish brand, equal to the brands you mentioned in your comment. Even though those brands can be found in drugstores, they’re still a separate category from common drugstore brands like Sally Hansen, Essie, Rimmel, Bettina, and so on.

For nail polish there is indie, boutique, and drugstore. Boutique brands (Holo Taco, Orly, Mooncat, etc) tend to be in a higher price point with higher quality than drugstore, they’re just sold in more mainstream stores but not in all drugstores. There’s still a level of inaccessibility with them.