Landlords of rental properties usually provide their cabinets in kitchens and bathrooms with low cost or average cost knobs. They usually are nothing expensive or fancy. Many people would like to replace them with some that are prettier or nicer, but do not want to invest a lot of money. If they plan on living there for a longer period of time, they will not mind investing a few more dollars. Some people do not realize that you can purchase knobs of any kind for any room for a reasonable or cheap cost at their local hardware store, lumber store or even outlets. Some very fancy knobs can be purchased without spending a lot of money and it really dresses up a room so much.