NATICK, Mass. -- BJ's Wholesale Club has always been in a category of its own.
The smallest of the three major membership club chains, BJ's was founded by a company previously known as Zayre Corp. 20 years ago. It has evolved and grown at its own pace -- sometimes following in the footsteps of its rivals and other times stepping out ahead.
Although its stores' aisles are stacked high, warehouse-style, with bulk packages of groceries, the company, based here, has long been