Peloton is preparing to launch a cheaper treadmill and a new high-end bike, while cutting the price of its existing bike to take advantage of fitness-starved consumers as many gyms remain closed. The new treadmill, called Tread, will cost less than $3,000, compared with $4,295 for the current model. The new stationary bike will be a premium offering called Bike+, and will likely cost more than the current $2,245 version.