Originally Posted by Eschaton

I wouldn't pay. This is why I use escrow services or something like eLance where the escrow is released 'after' the job has been completed. It's their fault if they "thought" it would take less time. If the programmer is half of a man he'll keep his word and finish the job for the agreed upon price and do a better job next time of not making the same mistake. I would be suspicious of any developer who does this as they could just say it's taking longer to get more money from people.