Hi,
Well, considering someone who is willing to join the SpiceJet Cadet Program, like all of the cadet programs out there, they always come with an added cost, but they do provide the "letter of Intent", which will allow you to join the airline as a first officer after successful completion of your training,
Below attached link is the interview I did with a SpiceJet cadet pilot, where we discuss potential questions, ranging from selection process to course structure to cost's and many other aspects.