Perhaps an experiment would help.
Delete all cookies/temporary files.
Refresh page ten times.
Observe increment
Refresh page ten times, clearing cookies/temporary files each time
Observe increment.
Ban all cookies. Refresh page ten times.
What does that yield?
I'd do this myself for you, but I don't have anything for sale at the moment, though the pressure is building up!
My son observed the other day "Dad, now you have learnt how to buy things on eBay, what about learning how to sell them!"
Paul