Greenworks 60V Brushless Li-Ion 21" Self-Propelled Lawn Mower w/ 5Ah Battery Expired

I can appreciate your desire to dig deep in the numbers.

Do you already own a mower? Gas or Electric? How much were you going to spend on a gas mower vs how much on electric ($320 this deal)?

What maintenance are you referring to? With electric - no gas, oil, spark plugs, tune up, pull cord, etc. You still have to keep undercarriage clean and airflow open, and of course pay attention to the blade.

I'd think even with higher than average rate of electricity, charging this battery would live in the realm of low power devices in your home.

A lot depends on your situation too though - grass area, leaves, type of grass, terrain, mow frequency, etc. These additions could either mean you need a new battery ($200) or more charges on this one. They also mean more gas, oil, trips to get those things, the "dirty" process of filling, cleaning, and maintaining the gas engine (not fun for some).

Say at worst, in 3 years you need a new battery. I doubt this Greenworks brand will be gone anytime soon. $67/year for the battery. I think this would put you in break even territory between cost of ownership between Gas/Electric over the life of the mower.

Then also consider with electric, it's arguably better for the environment, less fumes in your yard/home, way less noise (you can converse with your spouse while laughing at your confused neighbor who can't hear anything over the tiny engine they're pushing around), generally cleaner, and comes in a cool green color.

My reasoning was that, in the ~$500-600 range total cost of ownership for 6-9 years for what I hope is a good enough mower for me, I'm happy going electric.