Yeah its costly but there's alot stuff inside this. There's no doubt if India makes it, it will be cheaper and all these systems are available with Israeli and european companies and few of the equipment we can even get from US companies. In short India can make such an aircraft but IAF will have to define what they want and the number of aircrafts should be sufficient so as to bring down the cost.
No whoever thinks that these 9 aircrafts will be used by RAW or IB or NTRO are wrong. They don't need to acquire aircrafts this way. Israelis are offering everything to them, if they want they can purchase directly and nobody will say no.
Just like intelligence agencies armed forces also have their intelligence wings. During war time they became the major source of information. During peacetime also there intelligence wing is always active, IAF's intelligence wing can make use of these aircrafts during peacetime and can share information with everyone.
I think presently there are few UAVs and sensors which are lying in some dark corner in RAW facilities. I don't think they have the need to purchase these kind of aircrafts in this way, they should first operationalize those unused systems.