1 The cost of extermination services will depend upon the number of cockroaches and the size of your home. 2  The structure of your home will also be an issue; for example, a house that is built on a slab will be cheaper than a house that has a basement.3  On average, the cost will be around $75 to as much as $450 per visit. According to the website Networx.com, the average visit will cost anywhere from $100 to $400, depending upon the severity of the issue. 2  They also state that follow-up visits will usually cost as much as $100 each.