First of all, a competent locksmith would start by trying to pick the lock and would probably not have to drill it. Also, there is no difference between a deadbolt and a doorknob in this case.
As far as pricing, it depends on two things: time of day, and location.
If you are calling a locksmith out of normal business hours, you can expect everything to be more expensive.
Location means two things. First, the city. If you are in a large city, for example Chicago or New York, locksmiths are generally going to be much more expensive. If you are in a smaller city, for example Fort Collins, Colorado where I am from, the cost will be lower.
If you called me, a Locksmith, and told me you were locked out of your house during the day the cost would be $45 trip fee + $5-15 for unlocking the door (so a total of $50 to $60). I would probably be able to pick the lock, but if I had to drill it I wouldn't charge you extra (although you might have to buy a new lock for as little as $25 if it was a door knob).
If you lived in a large city, or called at a late time, it might be $100-$200.
The best questions to ask a locksmith are: are you bonded? are you certified by the Associated Locksmiths of Ameria? Are you a member of the Associated Locksmiths of America? Are you BBB Accredited? Are you licensed? If they answer yes to those, you can bet that their prices are fair.
Sources:
http://www.locksafesystems.com
automotive locksmith commercial locksmith residential locksmith emergency locksmith lockout service
Auto Locksmith, Home Locksmith, Office Locks, Home lockout, Car locksmith, Home lock installation, Office re key, Car lockout.
Residential Locksmith-- Commercial Locksmith-- Automotive Locksmith-- Emergency Locksmith-- Car Lockout-- Car Key Making-- Trunk Lockout-- Car Key Extraction-- Ignition Repair-- House Lockout-- Lock Rekey-- Lock Change-- Lock Installation-- Gate Lock Repair-- Business Lockout-- Lock Rekey-- Mailbox Change-- Lock Installation-- Safe Lockout
Emergency Locksmith Residential Locksmith Commercial Locksmith Automotive Locksmith Emergency Lockout Change keys & Locks
Emergency-Locksmith Residential Locksmith Commercial Locksmith Automotive Locksmith Emergency Lockout Change keys & Locks
new lock installation emergency locksmith home locksmith 24 hour locksmith mobile locksmith home lockout
Emergency-Locksmith, Residential Locksmith, Commercial Locksmith, Ignition Key, Automotive Locksmith, Emergency Lockout, Change keys & Locks.
Residential Locksmith Indianapolis
You can purchase a set of jigler keys for emergency lockout situations online from locksmith supply stores or from hardware stores that specialize in locksmith tools.
Residential Locksmith- Commercial Locksmith- Automotive Locksmith- Home / Car Lockout- Rekey Locks- Key Replacement- Car Keys- Change Locks
Ignition Key Automotive Locksmith Emergency Lockout Transponder Key
Ignition Key Automotive Locksmith Emergency Lockout Transponder Key