Program to automate purchases

Hello,
I'm looking for a developer who can write a script to automate purchases on website (Footlocker for example).
The program will be able to checkout a product from a website in few seconds. It have to be the fastest possible.
The program will be able to checkout a product with different profile. Because i will have to buy in the same time one product but with differents address/credit card/number etc.
The programm won't have a specific design, it's ok as long as it's understable.

We can discuss in private messages about the project, there is a lot of other things i want the script do.

Don't have delays in mind, just the job done.

Will pay through paypal.

Only serious developers, with references.

PS : I'm french, so if you speak french it's better, but not needed ;)