The price of contact lenses depends on many factors, such as, the type of the contacts , the prescription and the place you buy. However they are usually around 30 plus dollars per box and each box has six monthly lenses . You put them onto your top of index finger and then touch your finger to your eye. Once the contact lenses touch your eyeball, you will feel cold and then you move your eye around to make the contact in place. You need to put your contacts in the solution of the contact case to disinfect your contacts every night.