CapitánRecarga was born inside a wholesale top-up distributor that supplies shops: newsagents, call shops and neighbourhood stores. That business already holds the agreements with the carriers and the commission they pay for distribution.
This shop is the same top-up without the counter in between. Since the margin is already in the wholesaler's commission, there is no reason to charge you a surcharge on top of the amount.
Billed by CONNECTIOO LLC. If you run a shop and want to sell top-ups over your counter, that happens at Puntoprepago.