By Daniel Kline The warehouse club has always been a little different when it comes to its policies on credit cards. Costco (COST) – Get Costco Wholesale Corporation Report does not follow the same rules as other retailers. The membership-based warehouse club has a relentless focus on offering members the lowest prices possible. That allows it to do things that customers at its rivals would see as negatives. The warehouse club, for example, spends very little money or effort on merchandising. It more or less leaves its goods on warehouse shelves or pallets with little more than a price tag. In…