Door Knob
A door knob is a common household hardware item used to operate interior or entry doors, typically featuring a round handle that turns to open the latch.
Fun Fact
Door knobs can range from as low as $7 for basic models to over $489 for premium designer versions, but $39 represents the typical retail price a regular person pays.
Price History
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Snow Plowing
Snow plowing is a professional service using plow trucks to clear snow from driveways, sidewalks, and parking areas for residential and commercial properties in the United States.
Grand Piano (Steinway & Sons Model D)
Professional-grade concert grand piano with 9-foot frame.
4-Year College Degree
Average total cost of a 4-year degree at a public university (in-state).
Heart Bypass Surgery
Heart bypass surgery, also known as coronary artery bypass grafting (CABG), is a major open-heart procedure to improve blood flow to the heart by creating new pathways around blocked arteries.