A bumper repair cost will be estimated mainly on the size of repair and the type of bumper. Prices will also vary from shop to shop, so make a point of looking around and getting various prices from as many places as possible. This only counts if you don’t plan to repair it yourself, of course.
If you own a very old, antique, classic or collectible car you will no doubt want the highest standard of repair possible. You may need to find a specialist and obtain a bumper repair price from them. Older cars usually have metal bumpers and these can be easier to repair than the newer vinyl bumpers. You can take your car to a shop and get a car bumper repair estimate. They will be able to easily assess what repairs need doing and possibly offer you a full quote, rather than an estimate. In some cases the bumper may be beyond repair, in which case they might also be able to undertake that job and tell you a rough bumper replacement cost.
Metallic bumpers can sometimes be completely repaired with just a reshaping of the dented area. Removing the bumper and knocking out the dent with a rubber mallet and some soft wood will mean that it is perfectly plausible that you do the project yourself at a far smaller cost. If it is not something you feel capable of doing, then by all means visit a shop and get the best quote or estimate possible.
Costs can vary considerably from place to place. There is no simple calculation method involved. Basically the equation is Labor + Parts + Type of bumper = Cost. Shop prices range from $30 an hour for labor up to $80 or more, so it’s impossible to offer a price. If you repair it yourself, you are simply looking at the cost of materials.