Sound kind of high, but it must be a good one. I would never go back to a gas powered mower even it were free. Electric has no gas, no smell, no maintenace, etc., etc.
I bought my Ryobi Mulchinator push type at a garage sale about 10 years ago for $25 from a feller who said it was dead. It's probably circa 1990-95. All there is to these mowers is a motor and battery and some recharging & regulating circuitry. The recharging circuit was all corroded, so I bought a recharger from an auto parts place for $20. Battery was OK and lasted another couple of years. Bought a new battery (2 x 12V wired in series) for $80 total. Only other trouble since then was to buy another battery last year (this time I got it online for $60). Recently the handle started to bend where the cross-members were fastended, so I bolted 2 flat pieces of 1/4-in aluminum to each side.
I can cut front and back yards up to 4-inch high with one pass. I keep it recharged, but it will cut the yards 3 times before it starts to lose power -- about 4000 SF x 3.