Best Buy's big-box stores were seen as the category killer for a while, pushing out competitors such as Circuit City Stores Inc. But Best Buy more recently has lost business to online retailers that can offer more selection and often lower prices. 百思买的仓储式商店一度被视为品类杀手,它挤出了CircuitCityStoresInc.等竞争对手。但最近百思买的生意被能提供更多选择、通常还能提供更低价格的网络零售商抢走。