5-Prong Coring Lawn Aerator - Handheld Manual Soil Aeration Tool for Healthier Grass - Perfect for Compacted Soil, Golf Courses & Home Lawns

279.00 for a item with no specs supplied. 4 -5 prongs how long? thickness of these prongs?, are theses hollow? Do they need cleaning each & every time you step on it. How big is your lawn? Lets say this is the size of a pitchfork. A heavy duty one you can stand on and then move back and forth, then repeat. For a cost of 25 to 30.00 TOPS. I'm on my way to designing and making a few prototypes at less than 1.2 the cost with more prongs. 279.00 for what? At least a pitch fork has other various uses.