Late August is the sweet spot for buying a cordless electric lawn mower. Retailers are desperate to clear out summer inventory to make room for snow blowers, which means you can usually grab a solid model for around $550 without paying peak season prices.
Getting your yard sorted means trading that noisy gas engine for something quiet you can start with one hand. Once you make the switch, mowing takes less prep work and you will not have to mess with gas cans or spark plugs every weekend.
That introductory window is a strict deadline, not free money, and any remaining balance left over when it ends will trigger standard interest charges.