How do I choose a Google Ads agency for my ecommerce store?

First: where will the Google Ads account and Merchant Center live? The only right answer is in your name, under your email, with your billing, and the agency linked as a manager you can remove any time. If the agency wants to run ads from an account it owns, you cannot leave without starting your history over. That alone ends the call.

Second: who actually works on the account? A senior strategist on the sales call and a junior on the keyboard is the oldest trick in the industry. Ask who touches your account day to day, and how many other accounts that person runs. The answer tells you more than the pitch deck ever will.

A healthy fee for ecommerce is a percentage of ad spend that drops as you scale, with no setup fee and no lock-in. Month to month is the right standard: if the work is good, you will not want to leave, so a long contract only protects the agency from its own results.

Red flags on the money side: setup fees for nothing, twelve-month lock-ins, and fees charged on gross spend including the spend the agency wasted. Also ask what the fee includes. Feed optimization, tracking setup, and Merchant Center work should be inside it, not sold back to you as add-ons.

Ask for results in stores like yours, and ask how they verify those numbers. The honest answer involves matching Google Ads conversions against real Shopify orders, because Google's reported number alone can flatter anyone. An agency that never mentions tracking accuracy is telling you something.

Then check reviews somewhere the agency cannot edit. ZenoX holds a 4.7 rating from 35 reviews on Trustpilot, and we would rather you read those than any case study we picked ourselves. There is also a full step-by-step guide to verifying an agency's claims on our blog if you want to go deeper before you sign anything.