As others gear up for swimsuit shopping, I get ready to buy my winter coats. Once snowy weather hits, I head out to buy swimwear, pool toys, and summer outfits. I configured my inverted shopping schedule around the discounts that accompany overstocked clothing items belonging to a soon-to-be expired season. Since fashion trends change quickly, many shop owners try to rid last season’s clothing using heavy discounts. However, if they were able to calculate how...