There are a couple that comes to mind. Check out Paddle.
Stripe Atlas may serve this need.
Such solutions are wiedly available to current ecommerce business. Question you would have to ask yourself if what makes your different, what is unique in your product that is not currently available. You are targeting (basically) 2 types of customers: 1. Those who already have a solution in pla...
Besides using PayPal and Payoneer, I also recommend collecting international payments using cryptocurrency. Just look for the best cryptocurrency to fiat exchange in your nation and setup a coin wallet with a popular cryptocurrency such as Bitcoin, Ethereum, or Cardano which has low gas / transf...
I would look into Stripe they seem to be leading the way in developer tools / APIs for payment services.
Depending on the size of your test you could always establish a "TEST" account with a gateway/payments provider that understands this is a primary step for your proof of concept.
I have become a Stripe convert. The simplicity and straight forward pricing is great. The platform works seamlessly. Previously I was a big proponent of Paypal but now after a few months with Stripe I am not ever going back. I have not had one issue at all compared to having at least a dozen issu...
I have implemented a number of different solutions for similar models and found that Stripe is best (http://www.stripe.com)
Go with PayPal or Braintree, its your vanilla option. If you have expertise in integration, go with Stripe as well. If your business is high risk, go with ccbill or instabill. Also consider adding a Coinbase or BitPay account for bitcoin payments. It costs nothing to set up and is also immune ...