Simplify the following text for a Grade 12 native English-speaking person.
Original: Many people do not realize that extended warranties are not always provided through the manufacturer , but in some circumstances it may work to the consumer 's benefit .
Simplified: Extended warranties are not usually provided through the manufacturer but are extended through independent administrators . In some circumstances it may work to the consumer 's benefit having an assurance to the product from a company outside of place of purchase and\/or service .