I don't know what the deal is on these Casa Cuba Fuentes, but the places that carry them and have boxes listed won't sell boxes online. Tampa Sweethearts only has one size listed with a box price, Doble Cinco, "Available In Store Only - Call for information". But they sell the other Fuentes (they are Fuentes!) by the box online if they have boxes available. Huh, looks like they won't even sell fivers online. I have done business there.
I see Mike's Cigars carries them (I've never done business there) , "Call to Order", but other Fuentes you can add to cart.
Neptune has them (done business there), but the box of 30 (and fivers here, too) Casa Cuba "Available in Stores Only". They will sell singles online.
Not sure what's up, it's not like they are the most expensive blend or anything and they want to keep scalpers away.
Edit:
OK, called Tampa Sweethearts and asked what the deal was. Basically just Fuente family rules, in store only to help provide a draw to get customers in the door. But TS has been shut down to foot traffic since March '20, so they are relaxing the in store only. You can't order online, you have to order over the phone and they will ship (or you can pick up curbside), but they are selling them.