I would grab the values from a third part tool in my own database.
I will with copy+paste enter the html sourcecode in the textarea.
With click on button "Read"
- clear the table "amazon_bestseller"
- extract the values from textarea
- write the values in the table "amazon_bestseller"
- clear the textarea
- display the data in the screen table
button "Clear" cleared the screen table
- make a copy of the tab "products" with the name "bestseller"
- make the buttons "Read" and "Clear", all other buttons remove
- adapt the design of screen table
- read the data from table "amazon_bestseller"
added sourcecode.txt to test