Good question.
Well it all depends on a number of factors which a lot of
Senior Members may be able to shed light on.
Basically, depends on if you're seeking to buy the aircraft in flyaway conditions (without spares, weapons etc). There is also the type of engine you want to go for (
Pratt & Whitney or
GE).
If you've followed the
Rafale row/scandal that is currently brewing up in
India - you'd have better understanding and far clearer picture.
But my guess is it would cost somewhere around
(USD) $ 80 Million - and is for the upcoming
Block 70/72 (Super Viper) which is currently on order by both
Bahrain and
Slovakia.