My point is if someone is looking at a "bad" weakness in a reco, then it shouldn't be ground for rejection. Maybe the adcom should address it in the interview and see how the candidate reacts. I've never attended an info session, so I'm not aware what the schools have to say about this. I'm applying for the 1st time this year (and probably the last time), but i'm surprised no one ever brought it up before, i.e. the adcoms didn't think about it?
Also if your evaluator is himself from a good B-school, then he/she will be considerate while writing about weaknesses. But it may not be the case with others.
As for the above post, I don't see how essays can be manipulated. They just show how you think and how well you can project yourself as the right candidate. Unless you mean that one can get others to write a complete essay for him/her.
I have applied to 3 schools and haven't heard from anyone. Now I feel I should have probably taken help from a Consultant. I did approach one, but she was asking $9k for 4 schools

I don't know if that's the standard rate.