[REQ] Ecommerce front end with CMS and payment gateway

[xas]

Hi I am looking for a site rip or opensource PHP script that cat do the following

1) Sign up customers like most sites in a registration process. Take their names, emails and passwords and make an account
2) Take a paypal payment for a service subscription that they buy.
3) Let them log in and view their info as well as payment stats which would by in a MYSQL database

Are there any such simple scripts already out there for free, or paid, or leaked? What I want to do is make a clone site of coolproxies.com and I'd like people to sign up, subscribe to paypal(WMZ and bitcoin options nice but not needed as much as paypal) and then have an account ready to go with a randomly generated API key. Then I'd get a programmer to do the custom back end but I need the customer signup process done first obviously since it's so simple and generic and can be reused on other sites.