You need to understand that people like to complain about stuff. If they complained about the $50 and then you dropped it to $15. They got exactly what they wanted. Why would they not just keep complaining to get it down another $5?

People pay for stuff that is useful to them, the problem with light table is people don't understand why it is useful to them until they think about it/look at it. You should have completely ignored every complaint related too money.

VS costs hundreds of dollars (going into the thousands for MSDN). And it is used by hundreds of thousands of programmers.

If product A results in a increase in productivity people will pay for it.