I've a client who sells tumbler for kids range 2 - 10 years on amazon. He wants to run ads on FB and direct it to the product page on amazon for sales. But he wants the traffic to get on a landing page where they will fill the lead form to get 10% off and then on the thank you page they will get the discount code and on the thank you page they will click the link to direct them on their amazon page. They want to do it like that beacuse amazon don't share customer data of the customer & currently they don't want to make a shopify website. This is a good strategy???