By Paolo Sandoval Hear ye, hear ye, the court of no-brainer decisions is in session. First order of business: grabbing a pair of banging sunglasses for cheap this Memorial Day. There are a gazillion sales from what feels like an infinite number of brands, retailers and vendors, but few are better than GlassesUSA’s slam-dunk savings on some suave summer sunnies. That’s right; the GlassesUSA sale is arguably the best place to cop up on designer shades from Calvin Klein, Ray-Bans, Prada and more, with gargantuan savings that serve as icing on the immaculately curated cake. Between summer rays fin…