As of January 31, 2020, the price of replacing the lock core of an ordinary anti-theft door is about 100-300 yuan.

If you can replace it yourself, the price of buying a lock cylinder is actually not expensive, but if you have to ask a master to install it, the price will be higher.

Generally speaking, the price of an anti-theft lock cylinder for general household use is generally around one hundred yuan, with slightly better ones around two to three hundred yuan. If it is some other confidential anti-theft lock, it is another matter. Generally, it may cost tens of yuan to buy a lock cylinder from a master, and it may cost several hundred yuan to ask the master to bring the lock cylinder for installation. So it is better to buy the lock cylinder yourself.

Extended information

Notes:

1. The reason why the lock cylinder was stolen after the lock cylinder was changed is that the person who changed the lock was not a regular practitioner. Some criminals use the name of a locksmith company to deliberately leave loopholes when installing and changing locks for residents, and then they can easily enter and commit theft when the residents are not at home. Therefore, when looking for someone to replace the lock cylinder, you must find a regular company and don't just look for it from small advertisements on the roadside. When staff come to the door, they must check their employment certificates and ID cards, as well as certificates from relevant departments.

2. When replacing the lock cylinder of the anti-theft door, special attention should be paid to the size of the door's lock cylinder. After measuring it, buy a lock cylinder of the same size for replacement. If the size is not correct, the newly purchased lock cylinder cannot be installed, which is very troublesome.