Pulling products from different websites into my bubble app

So i want to create a marketplace web app. In the application, i would like to pull (or maybe scrap) product information from different websites in to a unified marketplace app i will be creating so customers can checkout on the app. The problem is, How can i scrap those products into my app? Do i need third party tool?

Yeah…I guess you’d need their API or something.
Will the purchase of the products be in your site or theirs?