It is a disaster, many people are still stuck with the project from the past 10 years.
I think RERA coming into picture, we wont be facing such issues in the future.
It completely depends on builder,
Builders with huge capital can sustain market instabilities compared to new entries.
Since you are looking for ready to move, it should not be a concern for you.
Kokapet has plenty of options in that price range. It is pretty much like a centre compared to Tellapur.