Right, and Standard Notes doesnt appear to be a counterexample: https://standardnotes.com/plans https://standardnotes.com/plans (all prices are in dollars). The

Right, and Standard Notes doesnt appear to be a counterexample: https://standardnotes.com/plans https://standardnotes.com/plans (all prices are in dollars). They appear to use coinpayments.net, which does the exact sort of dynamic pricing you're talking about - it costs significantly more today to purchase in Bitcoin than it did 24 hours ago.