WD-40
WD-40 is a multi-purpose lubricant and penetrating oil spray used for loosening stuck parts, rust removal, and general household maintenance.
Estimated value as of 2026
Fun Fact
WD-40 stands for 'Water Displacement, 40th formula' — it took 39 failed attempts before the engineers at Rocket Chemical Company perfected the formula in 1953.
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.