The prepaid servers are ideal for people who are not consuming a lot of requests. It's pay-as-you-go.
Premium shared server is ideal for production sites and apps
If you want your own server with unlimited* requests, go for dedicated.
Click here for more details on pricing on each plan.
Looking for the free version? You may visit the Free Currency Converter API website.
Please note that the services here are provided as is and without warranty (See Terms of Service). You only pay for the cost of the server. But I will try to help to the best of my ability if you need any support.
For further inquiries, you can contact me