Across the garden city, you can find plethora of advertisements and coaching centers Byjus have erected and created. However when it comes to the quality of training the courseware is little cheaper which you can get in any self-study bookshop.
Even via workforce, they strain their workforce by asking them to do as much cold-calling as possible because of which they lose interest and fail to give enough details in depth. I know of the latter part because my roomie was an intern at Byjus Bangalore.
So if you want to enrol in Byjus courses go ahead if you have overflowing coffers or you can go ahead with a good self-study kit itself.