The four options in one table
| SDR hire | Outbound agency | AI SDR tool | Managed service | |
|---|---|---|---|---|
| Typical cost | $110K to $140K a year fully loaded | $5K to $15K a month, minimum term | $500 to $3K a month plus data plus your time | Between a tool and an agency |
| Time to first send | 4 to 6 months (hire plus ramp) | 3 to 5 weeks | Days, if you have a list | 1 to 2 weeks |
| Who picks the accounts | The SDR, from your list | The agency, from filters you approve | You | The operator, from triggers, with your corrections |
| Who writes the angle | The SDR, usually from a template | A copywriter, from a brief | The model, from a prompt you wrote | The operator, per account |
| Who reads the replies | The SDR | An account manager | You | The operator, then you for the real ones |
| Volume model | As many as one person can work | High; the business model needs it | As many as you are willing to send | Low and deliberate |
| The failure mode | Leaves at month 14 and takes the learning with them | Volume erodes your domain and your reputation | It runs, nobody owns it, it quietly stops | Depends entirely on the operator's judgment |
Two of those columns are about labour and two are about judgment. That is the real axis. An SDR and an agency sell hours. A tool sells software and leaves the judgment with you. A managed service sells the judgment and uses software to make the hours cheap.
Hiring an SDR
The default answer, and the most expensive one for a small expert led firm. The full cost is closer to $130K a year than to the salary, and the first year is the worst one, because it includes the hiring cost, the ramp and the real chance the hire does not work out. An SDR also needs a manager, a list, a sequencer, a data source and a playbook, none of which a firm running on referrals already has.
Where it works: a firm with a proven motion, a sales leader who can coach, and enough qualified accounts that a full time person will never run out. Where it fails: a partner led firm that hires an SDR hoping the SDR will figure out the motion. The SDR cannot. The motion is the expensive part, and it has to come from someone who knows the market.
Retaining an outbound agency
Agencies solve the labour problem and the infrastructure problem in one invoice. You get a list, copy, a sequencer, inboxes and an account manager. The economics of an agency depend on volume, because their margin comes from running the same machine across many clients. So the machine sends a lot, and it sends from domains that have sent a lot before.
Where it works: a company with a broad market, a clear offer and a real sales team to take the meetings. Where it fails: an expert led firm whose whole brand is precision. Two hundred emails a week that read like an agency wrote them do not damage a SaaS company much. They do damage a consulting practice, because the email is the first sample of the work.
Buying an AI SDR tool
The tools have become good. For a few hundred to a few thousand dollars a month you can get research, drafting, sequencing and reply classification in one place, and the models write better first drafts than most junior reps. The invoice is small. The cost is that somebody at your firm now owns a piece of software, and that somebody is usually the founder.
Where it works: a company with a sales operator on staff who wants leverage. Where it fails: a five person advisory firm where the founder sets it up on a Sunday, gets a burst of activity, and stops checking it in week three because a client engagement started. The tool keeps sending. Nobody is reading. The reply that mattered went unanswered for nine days.
Using a managed service
A managed service is the agency shape with the tool economics and the judgment problem solved by an actual person. Somebody with experience picks the accounts, writes the reason for each one, runs the sequence on infrastructure they maintain, reads every reply, and tells you which conversations to take. AI does the repetitive research and drafting so the price does not have to be an agency price.
Where it works: expert led firms that need the next few right clients rather than the next hundred meetings, and that cannot spare the founder to run a tool. Where it fails: if the operator is not good. That is the whole bet. Which is why we run the first ten targets for free, so you can judge the judgment before you pay for it.
How ExpertLayer fits
ExpertLayer is the managed service column. We find bullseye prospects with a problem you can solve, develop the outreach angle, and run the entire outbound workflow. The 10 target review is free, and current pricing is on the home page.
A short decision rule
Answer three questions.
- Do you have a sales leader who can coach a rep every week? If no, do not hire an SDR yet.
- Is your market broad enough and your brand robust enough to survive volume? If no, an agency will cost you more than its fee.
- Is there someone at your firm who will check the tool every day for a year? If no, the tool will stop working in month two.
If you answered no to all three, you are the firm a managed service exists for. If you answered yes to all three, hire the SDR and give them a tool.
Questions we get on this
Which option is cheapest?+
An AI SDR tool has the lowest invoice and the highest cost, because someone at your company has to run it. An SDR hire is the most expensive on paper and the most expensive in practice once you add ramp, tools, management and turnover. An agency is predictable and priced for volume. A managed service like ExpertLayer sits between the tool and the agency on price and closer to the agency on outcome.
Which option is fastest?+
A tool, if you already have a target list and someone to work it. A managed service is usually sending within two weeks. An agency takes a month to onboard. An SDR hire takes two to three months to find and three more to ramp.
Can I combine them?+
Often the right answer. A firm with one closer and no prospecting capacity is well served by a managed service feeding that closer. A firm with a sales team already in place may want a tool for the team and a service for the accounts the team does not have time to research.
When is an SDR hire the right call?+
When you have a repeatable motion, enough qualified accounts to keep one person busy full time, a manager who can coach, and the patience to lose the first hire. Most expert led firms have none of those four, which is why they end up here.