Pick up products from a ecommerce (not mine) to another

I'm looking for a Freelance that could create a script or something similar that pick up products from an ecommerce (i don't have access to it's backend\db) and that give me a csv file or a similar file that i could import into my Prestashop ecommerce. I must pick up: - DESCRIPTION \ IMAGE \ PRODUCT CODE \ PRICE All of those parts are already online into another ecommerce (not mine). I must add the picked up infos into a product template that i already have.