I sell commercial printing mostly on the internet although I do solicit and accept local businesses as well. I consider myself a consultant which means I ask a lot of questions about anything you want printed so that I can select the correct paper and the appropriate quantity to print.
Comparing bids can be very challenging. Consider choosing the printer who asks the most questions before doing the quote. For example, I may ask you the purpose of printing this product. Is it just informational? Do you want a response? Who are the end users of this item? Will it sit on a table in a waiting room somewhere or will the user read it then wrap fish in it to throw away? There are so many kinds of paper designed for very specific results and printing your message on the wrong paper can lead to failure. Statement stuffers need different paper than a company brochure or an Annual Report so chose a printer who knows and understands paper and you can't go wrong.