If anyone is interested, here is free template on the following:
- How to create multiple primary, secondary, and third categories like you see on Argos (https://www.argos.co.uk) , Walmart (https://www.walmart.com/), etc. I used Argos categories.
- How to go to the top at the click of a button.
- How to show number of clicks on every category and item screen
- How to match items and do an exchange by email or phone
- How to sell items when no match is found etc.