You can usually start using it right away, but it all depends on the payment method you've chosen.
- Credit card or Paypal account: up to 24 hours (it'll often take just a few minutes though)
Sometimes your first payment may also be screened for fraud and spam, which can take up to 48 hours.
Unfortunately we can't make any of this quicker, as our payment processing is done by external billing services :(
Still, if you need to use E-goi right away, send us over a document confirming your payment and we'll try to sort things out for you.