Hi Mary,
I am a Google-Certified AdWords Professional specializing in advanced search. My experience creating and managing AdWords campaigns cuts across many verticals including consumer goods, professional services, home services and national franchises.
Sometimes, Mary, it is the case that when one is not receiving the kind of response he or she desires it is the website that is at fault. The design may not be professional, or perhaps mobile devices were not taken into account when the site was designed. And often, landing pages may not be as relevant to search terms as they should be.
Although I have not worked directly with companies in your business before, that is of far less consequence than ensuring that the website is professionally designed and highly relevant to search terms entered by consumers, and that all settings, keywords, ad groups and ads are meticulously built.
From learning about your business, your customers and your competition, I am certain I can be of great help to you.
The fee I have quoted includes a deep dive into your business, an understanding of the people who buy unlocked phones, considerable keyword research, formation of ad groups, advertising copywriting, and keyword bidding.
Once your campaign is set up it needs regular attention, bid adjustments, ad testing and reporting and constant testing. For ongoing service I charge a monthly management fee equal to 20% of your monthly ad spend.
Looking forward to hearing from you.
Bruce