"That's not the kind of company I'm going to trust with my data. What other kind of BS are they going to try to pull if they're willing to do something like this before I'm even a customer?"
I am sorry if that is confusing - it is not in any way meant to be a dark pattern or misleading.
We can't charge people, for instance, 30 cents per month (as in your example) - the fees or processing your card (or paypal payment) would be larger than that.
The minimum order of 500 GB computes to $10 per month. If you have a very tight budget, please email info@rsync.net and I will personally figure out a way (annual payment, whatever) to make it work for you. It will be larger than 15 GB, however, unless you want to pay 5 years in advance.
I was just about to change the wording on the pricing page to be "500-9999 GB" but that's even more confusing, IMO ... I think most people understand that processing fees dictate a minimum order ...