I develop e-commerce websites with payment gateway with such payment methods as PayPal, credit/debit card, and much more. I create not only e-commerce sites for stores, but I also create multivendor stores that allow different vendors to sell their products through the multivendor website.
The e-commerce websites can be subscription-based sites or regular payment sites. You may need a subscription-based website if you selling digital products like music and downloads, or maybe to sell services that require a monthly payment.
The e-commerce site comes with a free android app that navigates to the site and social media accounts.