If by the nature of your activity you come across PayPal or eBay accounts, then what I will write is for you. Even if you do not practice either a PP, it will still be interesting enough, and so on, for general development. I ate the dog on these self-registers. Do not lie, I had more than a hundred of them and 90% sooner or later caught the limits. But I came up with a formula according to which the limits will not affect you. Unfortunately, one topic that I am currently testing is not yet fully ready (as it will be, I will create an article), so this article will not be able to deprive you of the limits 100%, but it will help you to minimize them.