Include more features in webflow website

Here's a list of features that we would like to add to our webflow website

Register/Log In on site
● Add profile for clients to manage shipments and returns
● By Pass Jotform. Develop a form that allows to pay the price clients want
(posible with Stripe).
● Once the client completes the form specifying the product and pays for it. The
product is listed in our site.
● Sellers to be notified when someone is selling an specied.
● Support/ ticket system for selling products if there is conflict.
Please let me know if you can do this and what is your budget for it?