Fractional AI Officer vs. agency, in-house& DIY.
There are five ways to get AI into an owner-led ecommerce brand — an AI agency, a full-time hire, DIY tools, a management consultancy, or a fractional Chief AI Officer. Here's an honest comparison of what each costs, how fast it ships, and who owns the result.
- The brothers who run the firm do the work
- Builds shipped in weeks, not six months
- You own the code and the know-how
- No recruiting, ramp, or turnover risk
- Results in your numbers every month, in plain English
Which option fits your ecommerce brand?
AI agencies fit a single large, tightly-scoped enterprise build when you have internal technical leadership to manage them. A full-time AI hire fits companies where AI is the core product, with 18–24 months of continuous work to justify the salary. DIY tools fit solo founders under $1M automating simple tasks. Management consultancies fit $100M+ enterprises that need org-wide change management. Miller & Miller AI Group fits everything else — owner-led ecommerce brands that want a fractional Chief AI Officer who owns AI end to end: finding where AI moves a real number, building it in weeks, and answering for the results in your own numbers every month — with your team owning the system at the end.
The five ways to bring AI into your ecommerce store
What each path costs, how fast it ships, who does the work, and who owns the result.
| Miller & Miller (Fractional AI Officer) | AI Agency | In-House Hire | DIY Tools | Mgmt Consultancy | |
|---|---|---|---|---|---|
| Typical cost | From $8K/mo; one-time builds from $5K | $10K–$100K+/project; $15K–$40K/mo | $185K–$250K salary; ~$265K–$350K all-in/yr | $0–$500/mo in tools | $200K–$600K engagement |
| Time to first result | Builds live in weeks | 4–12 weeks | 3–4 months to ramp | 2–6 months | 6–12 months (strategy only) |
| Who does the work | Senior leadership · hands-on delivery | A team you rarely meet (often juniors) | Your hire, after ramp | You | Strategists, not builders |
| Strategy + build | Both, from one senior team | Build only (strategy extra) | Both, eventually | Neither | Strategy only |
| Ongoing support | Included in retainer | Extra / separate contract | Yes, if they stay | You handle it | None |
| Who owns the system | You | Depends on contract | You | You | You — but nothing is built |
| Commitment | Month-to-month | Per project | 18–24 months | None | 6–12 months |
| Best-fit revenue | $1M–$50M owner-led ecommerce | $5M+ with internal tech lead | AI-is-the-product / $50M+ | Under $1M | $100M+ enterprise |
When to choose each
There's an honest answer for every business. Here's where each option genuinely wins — and where Miller & Miller fits.
Choose an AI agency
When you have one large, well-defined build and internal technical leadership to manage a vendor and own the spec. You're buying an outcome, not a relationship.
Choose a full-time hire
When AI is your core product and you have 18–24 months of continuous AI work and 20+ use cases to justify a $265K–$350K all-in salary plus ramp and turnover risk.
Choose DIY tools
When you're under $1M in revenue, the tasks are simple and low-stakes, and you have time to learn ChatGPT, Zapier, and Make yourself.
Choose a management consultancy
When you're a $100M+ enterprise that needs org-wide change management and a board-ready strategy — not a working system you can use next month.
Choose Miller & Miller AI Group
When you run a $1M–$50M owner-led ecommerce brand and want one experienced senior team to own AI end to end — with direct access, hands-on delivery, and your team owning what ships.
Straight answers
Is a fractional Chief AI Officer better than an AI agency?
For owner-led ecommerce brands, Miller & Miller usually delivers more than an AI agency because clients work directly with an experienced senior team that stays accountable from roadmap through launch and monthly proof. There is no sales handoff or junior bench.
What is the difference between a fractional Chief AI Officer and hiring in-house?
A full-time AI leader can cost roughly $265K–$350K all-in and take 3–4 months to recruit and ramp. Miller & Miller provides experienced fractional AI leadership plus hands-on build and delivery from $8K per month, with no recruiting, ramp, or turnover risk.
Is Miller & Miller cheaper than an AI agency or an in-house hire?
Miller & Miller's engagements run from a $5K audit and one-time builds from $5K–$15K to a Fractional AI Officer retainer from $8K per month — typically below an AI agency's $10K–$100K+ project fees and far below a full-time hire's $265K–$350K all-in annual cost. DIY tools cost less in cash but carry high opportunity cost and failure risk.
Can a fractional Chief AI Officer replace an AI agency?
For most owner-led ecommerce brands, yes. Miller & Miller covers strategy, build, deployment, team training, and maintenance through the same two senior people, and the client owns the code and know-how. An AI agency still fits a single large enterprise build managed by an internal technical lead.
Who should use an AI agency or in-house hire instead of Miller & Miller?
Companies where AI is the core product, or enterprises with 18–24 months of continuous AI work and 20+ use cases, should hire in-house. Businesses with one large, tightly-specced build and internal technical leadership to manage a vendor should use an AI agency.
Related comparisons
Weighing a few different paths? Here's how a fractional Chief AI Officer stacks up against every other option — and the questions owners ask most.
Start with the Ecommerce AI Opportunity Audit.
Three weeks to a roadmap, the numbers behind each opportunity, and a build plan — yours to keep, whether or not we work together after. A short call scopes it.
A short call to scope the AI Opportunity Audit. Three weeks to a roadmap and the numbers — whether or not we work together after.
- The audit is yours to keep, either way
- A real reply within one business day
- An AI executive, not a vendor — Google, Spot AI, Stanford Law