Build vs buy: a custom product feed script vs a feed tool
6 min read
If you can code, writing a script to export a product feed looks trivial — pull the catalog, map some fields, write a file. And the first version is. The question isn't whether you can build it; it's whether you want to own it for the next two years.
Why the first version is easy
Exporting a CSV or XML from your database with the right column names is a weekend job. For a small, stable catalog going to one channel, a script can be perfectly fine — and cheaper than any tool.
Where it gets expensive
The cost isn't building it — it's everything after. Google changes spec requirements. You add a channel with different field names. Stakeholders want products excluded by margin. A disapproval needs a title rewrite. Stock needs to sync more often. Each of these is a code change, a deploy, and a thing only you understand.
The script also has to handle scale, retries, scheduling, and failures gracefully — the unglamorous parts that a feed service has already solved.
When buying wins
Buy when you have more than one channel, a catalog that changes, non-developers who need to tweak rules, or simply better things to build. A feed tool gives you a rules engine, scheduling, multi-destination delivery, and disapproval handling without you maintaining any of it.
You don't have to give up control
The fear with buying is losing the flexibility of code. Feedrou keeps script-level control available — custom logic and external data merges via API — so you get the maintained infrastructure and still drop down to code when a rule genuinely needs it.
Common questions
Is it cheaper to build my own feed script?
Upfront, yes, for a simple single-channel feed. Over time, maintenance — spec changes, new channels, rule tweaks, scaling, disapprovals — usually costs more than a tool, especially in developer time.
What breaks custom feed scripts over time?
Google spec changes, new channels with different field requirements, evolving business rules, scale and retry handling, and the fact that the script is often understood by only one person. Each becomes a code change instead of a config change.
Can I still write custom logic with a feed tool?
With Feedrou, yes. You get a visual rules engine plus script-level access and external data merging via API, so you keep code-level control where you need it without maintaining the whole pipeline.
Rather not deal with this yourself?
On our Pro plan, our team builds, configures and runs your feeds for you — zero touch. Or start free and do it yourself with the tools above.