what is a good price to get my ac system replaced on a 2002 focus the hose at the bottom ripped and the entire

Answer 1

Sounds like you wrecked it or (if it has one) the expansion valve froze shut and the high pressure switch failed. It should be an orifice system. Replace the hose, replace the orifice, and vaccum it out and recharge. Any reasonable shop would charge around 250-300 bucks.