It is a very common for contractors to find themselves locked into to a historical pricing structure that is holding their business back.
Remaining under-priced for too long can be catastrophic. Not just because it's a barrier to making a profit but because it's very likely that any inflationary price hikes will not keep pace with any price rises that may be levied by suppliers.
The thought or raising prices 10, 20 or 30% across the the board will fill some contractors full of dread and worry that a mass exodus will ensue.
The following will explain how to increase prices without losing clients.