4%, 6%, 6.5%, 7%, 7.5%, 8%, 8.25%, or 8.5% dependant on what threshold you achieve. Many hubbers achieve 7%, at least a few achieve 8%. Electronics are capped at 4% however, and laptops are capped at $25. Some items actually recieve 10% commission, including Kindle books and Videos On Demand. I believe that the commission for the Amazon Kindle is even greater than 10%!
I would not call 7-8% "very minimal". The $25 that I recently got paid for a $2400 Apple Macbook Pro can be considered minimal however, as this works out at a fraction over 1%.