Florida does not require businesses selling online to collect sales tax from buyers in other states unless the business has a physical presence in that state. That presence can be any number of things, including a brick & mortar store, a warehouse, or an office. If the business does collect sales tax, it will be on behalf of the buyer's state, not the seller's. (In other words, if the business was going to charge you Florida sales tax, they were doing so mistakenly.)
Since your location states "the Sonoran desert", it's probably safe to assume you're in Arizona or California. Both of those states require payment of a "use tax" on purchases from out-of-state vendors that don't collect sales tax. So in this case, you shouldn't have been charged Florida sales tax, but you would be legally obligated to pay an equivalent use tax to your own state, likely to be noted on your annual income tax return.