I kinda enjoy the build quality of Berlin's shared bikes. "Heavy" is usually attributed to cheap materials, but for these bikes, it's a result of the requirements of their typical usage. I've heard prices of around $4000 quoted for these bike, meaning most of their components are better than almost all other bikes on the road.

They seem indestructible, and, once moving, can roll forever without slowing down. Yes, because of their high weight. But also because they're well-maintained and have low losses in components such as bearings and gears.

The weight is obviously far too high, and I wouldn't buy anything with these characteristics for personal use. But it's fun once in a while Used to be even better when they had suspensions that basically allowed you to take the curbs without slowing down.