Hi, I don't think Yulu is selling these electric bikes.
There are other e-bikes available starting at Rs.20,000. Eg. Avon e-bikes.
Yulu is importing these bikes from China for it's rental business. But I believe they procure the batteries in India. It's easy to rent these bikes in Bangalore. However if you really really are impressed by the Yulu bikes that you want to own one, you can try buying them via AliExpress. It's going to be an expensive affair for sure!