It’s good to know that the Tejas will be using the reliable GE F414 engine and that production is final getter underway. The only drawback is that India is again at the whim of a possible US embargo, which could delay or halt the production. Too bad the indigenous engine is not finalized.
Miragedriver, US sanctions came in 1998, or 13 years ago. Today, the world and India have changed a lot and India is not as easily "sanctionable" as it was way back in 1998.
Given GE's other massive investments in India recently, sanctions are even more unlikely.
For this order, GE beat Eurojet by a whisker when everyone thought that Eurojet would win, given that EJ-2000 was a newer engine. Eurojet actually lost because they submitted their revised bid a day after the last date.
In order to decrease their unit costs for this aircraft, to around $20m, they will need to consider a production run of around 200+/-. This will most likely be accomplished with orders from the Navy and replacement aircraft.
As I said earlier, there are 140 confirmed orders for the IAF version of Tejas (40 with older GE-404 engine, and 100 with new GE-F414 engines). This is not a final order, which could be extended if needed. But its not going to bring costs down to as low as $20 mn. Its acquisition cost is $40 million per unit, but that's INCLUDING the development costs since the past 25 years. Standalone unit costs would be $30mn in my own estimate.
The Navy has expressed interest for 2 squadrons so far.
For Navy Tejas, you can look at this superb inaugral video :