Now that the debris problem is gone, I suddenly have a large leak under the sink. I know no one can fix it from online- but when I call a plumbler, How much should I expect him to quote me to come to my home, and then just to replace a pipe under the sink. I have no idea, I'm afraid he'll say $400.00, and I won't know if that's fair or not

Please explain, in detail, where the leak is and what pipe's leaking. Pressure or drainage. Regards, Tom

It was pipe leaking in 3 places from incoming hot water line, he charged me $144.00, and put in plastic pipe, is this good?

P.S. Thanks Tom for taking the trouble to help a helpless lady.