In addition, medical devices include in vitro diagnostic products, such as general purpose lab equipment, reagents, and test kits, which may include monoclonal antibody technology. Certain electronic radiation emitting products with medical application and claims meet the definition of medical device.
Sales commission is a variable cost because the amount of the account is subject to variation. Think about it: A used car salesman is paid a commission say of $500 for every car he sells for the month of October. If he sells only 2 cars, then the sales commission is $1000, If he sells a whopping 12 cars, then the sales commission is $6000!!
Conversely, if a company has low fixed costs, it probably has a high variable cost per unit. In this case, a business can earn a profit at very low volume levels, but does not earn outsized profits as sales increase. For example, a consulting business has few fixed costs, while most of its labor costs are variable.