Here are some mistakes others have made that you can avoid:
Assuming that you cannot afford a mover without gathering any estimates.
Getting an estimate from just one moving company.
Considering only price.
Not understanding the different types of estimates offered by movers.
Not checking out the mover's reputation.
Not getting adequate answers to questions on the mover's liability and insurance.
Not understanding the inventory, order of service, or the bill of lading—the contract between you and the mover.
Local electricity prices