Flow work is inexpensive relative to almost anything else on Shopify, because the platform is free and the work is logic rather than code. That makes an audit unusually good value as a starting point.
Start with an audit if you don't have a specific workflow in mind. An automation audit ($800-$2,500) looks at what your team does manually and identifies what Flow could take over. Most stores find between five and fifteen candidates, and the good ones pay for the audit in the first month of saved labour. This is the highest-return Flow engagement and the one merchants least often ask for.
For a broken workflow, describe the symptom precisely. "Flow isn't working" gets you a discovery call. "Our order tagging workflow ran fine until we updated our fraud app three weeks ago, and now it fires on some orders but not others" gets you a diagnosis, because the intermittent-after-app-update pattern points at a specific cause.
Ask whether it should be Flow at all. Flow is excellent within its limits and poor outside them. Complex multi-step logic, anything needing external data, or high-volume operations often belong in a proper integration or a purpose-built app instead. A consultant who tries to build everything in Flow is creating something fragile.
Check they've worked with your specific app connectors. Flow's value multiplies when it connects to Klaviyo, Gorgias, a 3PL, or an ERP — and connector behaviour varies by app. Ask about the ones in your stack.
Document what each workflow does before you build more. The most expensive Flow problem isn't a broken workflow, it's thirty undocumented ones where nobody remembers what half of them are for. Ask any consultant you hire to leave documentation behind.