Guides to choosing a robot lawn mower by the two numbers that decide most of the choice: the lawn size it is rated for and what it costs. Two guides so far, built from the makers’ own US specifications and store prices, each with the date we checked them.
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Start with the size of your lawn
Price follows the rated lawn size more closely than any other feature. On the makers' US stores in November 2026, home robot mowers cost from $799 to $6,999, and the cheapest were the ones rated for the smallest lawns. The rating also assumes a lawn the mower can cover easily: Husqvarna, for example, gives its iQ models one capacity for a systematic layout and a lower one for an irregular lawn with beds, trees and narrow passages. Measure your lawn, decide how complicated it is, and then compare prices within the size that fits.