If you are thinking of running some type of online store either selling products or services you may well consider how payment will be made to you by purchasers of your product. Most internet sites now have the option of either Pay Pal or credit card online payments and those that do not are at a serious disadvantage.
Although it can be more expensive to accept Pay Pal or credit cards, the cost of lost business can be far greater than just swallowing whatever percentage the company is taking. It is better to have much more business at a slightly lower margin than no business at all, after all.
Consumers expect instant service now, and payment is no exception. They like to know that their payment has been made securely and successfully and they like to know that their product will ship quickly.
Those sites that still insist on some other method of payment (yes, there are still some! But they are becoming dinosaurs in the world of the internet!) such as cheques in the post have no competitive edge and will not likely be in business for long.
The key thing is that you have to make it as simple as possible for the consumer to do business with your company and a quick and easy payment system is one way that they are likely to come back to you for repeat business.