How to add multiple items for sale in a simple form?

I am trying to create a simple form consisting of name, address, etc. But within the form I need 2 radio buttons, 1. Full Membership - $100 and 2. Associate Member - $50. There is also an option to pay “offline” or via “paypal”. After selecting and hitting submit, the form details need to be sent to a database for easy viewing and exporting later, and the person filling the form needs to then be directed to either paypal for payment reflecting their membership selection (full or associate) or to a page I create, detailing instructions for offline payment.

Note, I used 123 Form Builder, but they are proving to be too expensive, so I am hoping my Basic Ascend account and Corvid prove to be of some use to solve my problem.

Hello,

You can create your custom form using User Input elements.
Creating a Form with User Input Elements
https://www.wix.com/corvid/examples?search=form - Examples that you can open in your Editor, play with them, adjust the code to your needs and implement it on your site.

You will need to use wix-data API, specifically insert() to save all the data to a database collection .
https://www.wix.com/corvid/reference/wix-data.html#insert

To redirects your site visitors to the specified URL/page, you will need to use wix-location.to() .
https://www.wix.com/corvid/reference/wix-location.html#to

https://www.wix.com/corvid/reference/$w.RadioButtonGroup.html - API of the RadioButtonGroup element.