historical pricing for CCO?

Looking for some help! I'm new to poshmark and have a question around the closet clear out sale option. I see you discount the item by 10% but noticed it says it has to be 10% lower than the historical pricing? So if I do the poshmark closet clear out on Friday (dropping my listings all by 10%), I then raised my prices back to normal the saturday. Does this mean that on sunday when there is another closet clear out, I only get the offer on shipping costs if I were to drop the listings another 10%?? so a total of 20% off the original price?