You get a lot of peace of mind when working with a processor, but the application process can be a pain. (You need to provide a lot of information about your company, have a business bank account,
PayPal also lets you accept secure payments, even credit card purchases, but the application process is as easy as providing your country, name, address, home telephone number, and e-mail address, and accepting the PayPal User Agreement. You can decide to open an e-commerce shop in the morning and start accepting payments in the afternoon.
If you accept PayPal payments, you can set up your Payment Receiving Preferences to block certain types of buyers. You can decide not to sell internationally or to block purchases from buyers who have not confirmed their address. This adds another layer of protection for you as the seller. Additionally, you can decide to accept payments only if they are made in a specific currency, and you can block buyers who try to purchase with a credit card when they have a bank account linked to their credit account.