There is no one definitive answer to this question as it depends on the specific needs of your business. However, some basics that are typically included in a filing cabinet package are drawers, a keyboard tray, a leveling feet system, and a filing system.
As a general rule, most office supply stores offer a wide variety of filing cabinets to choose from.
To get a definitive answer, it would be necessary to speak with a sales representative at the store. However, based on the information provided, it would appear that most office supply stores do sell filing cabinets.