In an NBA that’s definitely divided into a world of haves — such as the Warriors and the Cavs — and have-nots, one thing that unites fans is griping about sky-high beer prices. Along with wins and losses, the cheapest priced beers at NBA arenas actually vary quite a bit. We examined last year’s beer prices around the league and then adjusted those prices for wins. Call it a Beer Basketball Pain Index — at least if you’re among the folks in markets like Philadelphia, Brooklyn and Los Angeles.