I'm creating a step-by-step image chart to a website describing a paid program that only liberates access when user's payment is confirmed. I want to be far from showing users some greedy icon (like a sack with a dollar sign) or limiting their idea of payment forms.
My question is: How do you politely show "as soon as your payment is confirmed"? I've thinking about bills/coins/credit card with a green check sign to say everything's right. But I've seen websites using something as simple as a green seal with a white check.