I truly tried to stay away from doing this, cause I do believe it's important to sit back and think about everything you might run into on a project before bidding it. I have never lost a bid cause I didn't give them a price right there and then(in fact I've lost the last 2 that I did on site BP for), I say I will get back to them in 24hrs, and I do, Even if it's some thing I've done a million times, I like to crunch the #'s a little bit. But this weekend I did it again and I regretted it cause I thought of a couple things after the fact. I honestly feel I will never do it again. As far as doing ballpark bids, how much have you re-adjusted it on the final bid? Did you lose the bid after adjusting it?