Regarding feedback, if a person buys multiple items, they can give feedback for each item.  But altogether it only counts as total of  1 percent that week.(for each person purchasing and leaving feedback  For example, if you bought 10 items and left 10 negatives, it would only make the score go down 1 percent that week. (and that could be affected by others who leave either positive or negative scores.)  Some people use the same feedback remark for every purchase they are happy with, instead of writing something specific.  There is feedback only allowed once for each item purchased.
Jeremy knows just how to handle this type of fraud................
Pattye
so many pearls, so little time