In one sentence, describe what the following article is about:

The average fee for a home inspection is between $350-$500, but the information received from an inspector is priceless. It could be the turning point between a sale and a buyer going back to searching for the perfect home. There are home inspectors that offer a lower price, but you must beware of their credentials, and their business ethics. Home inspectors enter a home and analyze all of the major components that make up a house purchase. Home inspection companies document the safety and overall condition  of a home at the time of the inspection. Home inspections usually take about 3 hours for a  minimal inspection, and 5 or 6 hours in order to arrive at a thorough,  proper assessment. Depending on how old or large a house is, it may take  longer or less time to complete.  Home buyers benefit from attending the inspection. Although a written report is furnished upon completion, it doesn't compare to the hands-on, up-front experience of  going through the house with the home inspection representative. This process is important in order to protect both the buyer and the seller. Homeowners will know the sort of repairs or enhancements that their home needs in order to secure a sale and avoid legal liability for selling a damaged or dangerous property. Knowledge about problems with a home enables the buyer to make informed  decisions on making an offer on a piece of property. Often buyers make  an offer asking the seller to fix certain things or lower the price  based on the home inspector's evaluation. A home inspector must thoroughly conduct a review of the inner and outer areas of a house, including:  Plumbing: While conducting a home inspection, old piping materials, faulty fixtures, water pumps and water heaters are some of the concerns that an inspector will focus on. Plumbing defects are one of the main issues a homeowner and/or buyers will face in terms of repairs. Roof: A home inspection company will check a roof to see if there are any old or deteriorated shingles; as well as any leaks. Homeowners can gauge whether or not a roof should be replaced. Usually tar and gravel roofs last about 15 years, where wood shakes have an average life span of 20-25 years. Structural issues: The overall condition of main structures in the house is also analyzed during a home inspection. The condition of the home's foundation and walls are looked at. Floor joists and rafters are of importance, as are window and door headers. Older houses are checked for sagging and settlement issues. These issues can be priciest for the homeowner to fix, and are very common in older homes.  Heating and air conditioning systems: The heat distribution pipes and air ducts are checked during a home inspection. A buyer will also want to know if operating controls are in good condition, as well as the condition of the chimney. Electrical wiring: During a home inspection, the condition of the electrical wiring throughout the house is a concern. Wire connections and power overload prevention are some of the aspects an inspector will take note of. Water in the basement: When water has entered the basement or crawl space of a home, a host of property problems are soon to follow. This includes mold and/or frame rot. Home inspectors are especially keen on detecting these problems, which are quite visible through discoloration, musty smells, mildew and water leak stains. Chemical concerns: Inspectors look for evidence of radon, asbestos, mold, and lead, which can be dangerous to occupants. If the property uses well water, they also assess the quality of the water to be sure its safe.  Pests: Home inspectors look for evidence of pests like termites that can damage the integrity of the home, as well as other pests like roaches and mice. It is a home inspector's job to find any existing or potential problems with a house. They can lose their license if they fail to report issues, so although it might feel like they're purposely giving bad news, be thankful for the information. If you are the seller, it is important to fix or disclose any issues with the house when you put it on the market. Otherwise, you are potentially legally liable for problems the new homeowner's encounter.

Summary:
Be prepared for the cost. Understand the actual inspection. Know what will be inspected. Be prepared for bad news.