Last summer I build on my yard swimming pool. My neibor came and offer to do electrical work to the pool (he has his own electrician company). He ask me to do all trenches and he will do all electrical work. He said it will cost for me $700. I agreed. During his work, he offer me to bring pover in the shed and he said, that I will need more power in my basement. He broth 100amp and install subpanel in my basement. He never said how much it will cost. I thouth it will cost for me extra $300-500-700. But he ask for $4000 and when I said it is too much, he gave me bill for $3100. Does any body have an idea how much I have to pay him?