I have a cpl of things to say...
@Menta - there are other schools and other countries where one can go for training. if CAE was the only one worth going to, evrything else would have shut down already.
@original poster - Cost wise 45L isnt bad if it includes the cost of type rating. you will spend the same if you train elsewhere and then spend on your type rating. However keep in mind that although the program promises a job with Indigo, there are no guarantess in this field. the economic situation may change tomorrow or CAE and Indigo may part ways or any other number of things may happen. Take CAE if you get it but work hard and prepare as though you are competing in the open market with all other unemployed pilots.
Regarding quality of training, a lot depends on the work you put into it and how much you take advantage of the resources provided by the flight school/ ground school. CAE, IGRUA, Chimes or any other in India or abroad, pick one with good infra, good reputation. visit them in person before you sign up if thats possible for you.
Lastly, you are entering a profession that requires lot of hard work, constant studies, knowledge upgrades and a lifelong quest for excellence. make sure you are ready for that. There is no shortage of first officers in the airlines who were never able to increase their level and so are just not fit to command a plane and are stuck as FOs forever.
these were my 2 cents.
in the end you have to make the decision
all the best