Most of the discounts that are seen are the discounts given to customers who have bought a membership package and want to buy a clip which is not in the membership plan. They are given an automatic discount - which is "usually" 10%
I would advise that if you want to circumvent this, simply raise your prices - that's what I did.
In fact I've raised my prices by 10% 3 times this last year as I have not seen any slowdown in sales each time I did it.
This last 12 months I've noticed that prices have generally gone up and contributors who still insist on pricing at low levels are simply throwing money away.
This is IMHO of course.