Uber-owned Jump Bikes sent an email to users announcing the launch of a subscription service called Jump+, according to the Financial Times. At $11.99 a week, the subscription would work out at more than $600 a year, making it as expensive as buying an e-bike. Jump users received an email on Monday inviting them to take part in a new service called Jump+, an e-bike subscription service. Uber says Jump+ is not actually live yet and the email was designed to gauge customer interest.