We are not in the habit of building a plane on production line and then send them to X Y or Z to fit their avionics.
All the required avionics are fitted in Nasik and tested before testing them,
And if you read the full statement rather than taking part of it to mislead., it says
The
IAF currently plans to have 272 Su-30MKI fighters by about 2018. HAL’s Nashik production line is building the fighter at Rs 358 crore each,
less than half the estimated cost of buying the Rafale.
“The Su-30MKI is an adequate aircraft for meeting the air force’s needs,” said Parrikar.
I THINK THAT DOES STATE IT TOTALLY, I mean are french going to send half the planes? I guess not.
It says the "production line" is building them at 358 crore. That does not include 3rd party components. The current flyaway is over $75 million. If it was only $55 million IAF would not be complaining about how expensive they are.