By Paolo Sandoval In case you haven’t caught on, Memorial Day is a great time to save a buck or two on…well, anything. J.Crew’s holiday sale is like a microcosmic version of this phenomenon. From shirts to suits to shoes to sunglasses, anything and everything you could possibly need for a well-dressed summer and beyond is on sale and up for grabs. The J.Crew Memorial Day sale doesn’t just offer a flat discount. While the entire store is indeed marked down 30% with code SUMMER, now through Monday, the (already marked down) sale section is a whopping extra 50% off, sending discounts sailing into…