When trying to find a supplier for your wholesale merchandise, you may have a difficult time opening an account. You will really need to establish your business and make it credible first. Wholesale suppliers require a sales tax ID and will typically only work with legitimate businesses.
To get maximum value from comparing notes, you want to do it with others who have very similar operations to yours. Compare with others in your state, with similar license categories, similar sales volume, doing very similar types of work. By doing this you remove confusing variation, which you must do to understanding what your rates should be. Significant claim history can influence rates. If one of your group is paying a lot more, ask about claim history, to see if that explains it.