Hey, no your assumption is not correct. Your usage is $32 a month, upgrading to the pro plan isn't cheaper, it would cost the same. The hobby plan costs $5 and includes $5 of usage. If your usage is $6, then you will pay $6 ($5 for the hobby plan which includes $5 and $1 extra for the additional usage). Your usage of $32 implies that you have used the included $5 and an additional $27 of usage. The easiest way to think about it, is that you are always charged exactly for your usage with a minimum charge of $5 on the hobby plan.Since your usage is already over $20 a month, you might as well upgrade to the pro plan for higher limits and additional features/perks. The pro plan includes $20 of usage or in other words, has a minimum charge of $20.The documentation also has an example on how the included usage works: https://docs.railway.com/reference/pricing/plans#included-usage.