I've been on one since last November, I quit riding my 'acoustic' mtn. bike due to the hill I live on, it's a cardiac trying to go up it straight (too narrow and busy for zig-zagging), and 15 gears wasn't enough.
That was about 10 years ago, and have been missing riding, so I bit the bullet an bought the ebike, and now I'm addicted to riding it, 1000% better than not riding at all, and that cardiac hill is cake now. I didn't want to spend a fortune, and I knew I'd be riding about 85% on the street, but I wanted to have what it took for that 15% dirt riding. I opted for a 750 watt, rear drive, 4" x 26" fatty, 5 power assist levels, 7 gears, 24 mph max., 45 miles ave. per charge, but I can get closer to 70 because I use very little power assist, with the exception of that bitch of a hill to get back up to my house. It's a Rad Power Bike 'Rover', out of Seattle Washington, I have no idea if they are showing up down under, but many are showing up in Hawaii. Mine cost $1600 USD, w/o extras (fenders, rack, bag, rear view mirror). Best $1600 I've ever spent, racking up some serious miles when the wind isn't blowing.
Yes, that's an Ezzy sail key ring.