If you have a company that sells shoes. A current pair of shoes would sell at an average of KD__59__a pair. And currently you sell __14,800__pairs annually. You are considering to add flip flops that would sell for KD__39___ a pair. You estimate that you can sell ___6000____ pairs of the flip flops but will sell __3500_ less pairs of shoes each year by doing so. What is the estimated value of the annual erosion cost that should be charged to the flip flops project?