Unfortunately, neither of those pages have the option of displaying the id of the product record.  

Downloading the list also does not display the id.

The only way I have found the id is to go to the developer site and overwrite an api sample query.

https://developer.intuit.com/app/developer/qbo/docs/api/accounting/all-entities/item

select * from Item

Otherwise I would have to write code in my integration to get this list.