Usually, the door-to-door fee needs to be up and down in 30 yuan; Unlocking and changing the lock is a sum of money. If the lock is brought by the master, you have to pay for the lock. Unlocking and changing locks are all one-way charges. Unlocking and changing locks are still charged. If they are opened together, the price can be discounted. The door-to-door fee is 30 to 50, and the price of the lock core is high or low.