Yes, but it's still stupid. Cloud hosting companies who are using hourly billing are used to spin instances up and down all the time. Imagine your app has a busy day and you need 500% more resources than usual, with the system of Vultr you will be automatically charged 500% of your regular usage only because of one days spike (obviously only if you are near the $0 balance mark)
- They are not a bank, so the money in your "account" with them is just an unsecured, general liability to you. If they go bust, they owe you money but you will never see it.
- If you want to withdraw that money from your "account" and they refuse, then your options are pretty limited.
Once they take it from your payment method, it becomes their money, not yours. That's a charge.
I am not disagreeing with what you say, but "charged" as it was used in the GP comment, it might have lead someone to believe that VULTR charge for usage per month.
To be honest, I have no idea what you are talking about. Your card is being charged and that's all I said. Sure you have credits to spend, but the cash you have no immediate need for on your Vultr account sits now there because of their billing practices.