The real cost of owning an AI SDR: data, domains and review time

The real cost of an AI SDR has five parts: the software subscription, the contact data, the sending infrastructure for email, the review time of the person who runs it, and the cost of wrong messages. On Sellinger's list prices the software is $198 a month for a LinkedIn agent or $249 for LinkedIn plus 4,000 emails. For a small setup our estimate for time and data is another few hundred dollars a month, most of it your hours.

Vendor pages compare subscription prices because that is the number they control. A buyer who compares only that number gets surprised in month two. This post is a cost model you can fill in. Every figure is either a Sellinger list price checked on 19 October 2026, or an estimate that we label as one.

1. What does the software cost?

Our list prices, per month:

Every messaging module and bundle starts with a 30 day free trial and needs no card. Competitor prices differ and change; our AI SDR pricing comparison dates and sources each cell, so use it rather than a figure from memory.

2. What does data cost?

You need people to write to. Sources:

• Your own list. Free, but your time to build and clean it.
• LinkedIn search. Free or paid, with limits on what you can see.
• A database. Sellinger offers 700M+ contacts. A lookup of an email, a company or a person costs $0.01.
• A signal. Intent signals are included with every bundle.

For a campaign of 500 contacts, if every contact needed one lookup, the data cost is about $5. Lookups are cheap. The cost is deciding who belongs on the list. See B2B lead database buying guide for how to price data per usable contact.

3. What does email infrastructure cost?

Cold email needs somewhere to send from. Cost items are mailboxes, a separate sending domain you can afford to damage, and the setup to authenticate it with SPF, DKIM and DMARC. Google and Yahoo also ask for one click unsubscribe and a spam rate under 0.30% (rules explained). Prices depend on your provider, so we do not quote a number. Plan on a mailbox per sender, since our default limit is 50 sends a day per mailbox, with an optional warm up that starts at 5 and doubles every 3 days up to the limit.

LinkedIn needs no extra infrastructure beyond the account itself. Our defaults are 20 invitations a day and 150 a week per account, so volume scales with accounts, not with a bigger plan.

4. What does your time cost?

This is the biggest cost for a small setup, and the one vendors leave out. Our estimate, for one campaign:

• Setup: a few hours for audience, offer, rules and knowledge. See the 12 decisions.
• Weekly: one to two hours to read flagged conversations, approve messages and look at the numbers.
• Meetings: whatever time the calls take. They are the point.

Put a price on an hour. If your time is worth $50, two hours a week is about $400 a month. If it is worth $150, $1,200. This is an estimate, and it is why the choice between a $198 tool and a $249 tool is rarely the deciding factor. The person who runs it matters more.

Review time falls as the agent learns your rules. On our own account 93% of replied conversations since May 2026 ran with no human message, after a long period of setting rules and reading threads.

5. What does a wrong message cost?

The hardest to price and the most real. Examples:

• A damaged domain. Bounces and spam complaints can move your sending reputation. A new domain and a warm up are the cost of replacing it.
• A restricted LinkedIn account. An account that goes beyond what LinkedIn tolerates may be limited. No tool can guarantee it never happens. See LinkedIn account restricted.
• A wrong claim. An agent that states something false to a prospect can cost a deal and a reputation.
• A missed reply. A hot lead who waits a day.

These are why approval mode, limits and guardrails exist. They are the price of a cheap mistake avoided.

What does a worked example look like?

All inputs are made up or estimates, so replace them with yours. A founder runs one LinkedIn agent and a small email campaign.

If that setup holds, say, 6 meetings a month, the cost per held meeting is about $120. If it holds 2, about $370. The calculation shows what to measure: held meetings, not seats. For the comparison with a human SDR, with its sources, see the ROI of an AI SDR vs a human SDR.

How does the cost change as you add accounts?

LinkedIn is priced per agent, and the price per agent falls with volume: $198 for one to two agents, $188 for three to four, $178 for five to nine and $168 for ten or more. Because the default cap is 20 invitations a day and 150 a week per account, more LinkedIn volume means more accounts, and the bill scales with them. Three agents at the three to four tier is 3 x $188 = $564 a month before data and review time.

Email works the other way. You pay for a plan sized in messages (Starter $39, Growth $149, Scale $449, Pro $1,099, Max $2,199), but the real limit is mailboxes, because the default is 50 sends a day per mailbox. A plan with more messages does nothing if you have one mailbox.

Review time does not fall linearly with volume. Rules, knowledge and the way you read threads are written once and reused, so a second campaign costs less of your time than the first. That is an observation from setting up campaigns, not a measured ratio, so check it against your own hours after the first month.

Which cost is easiest to forget?

Three items tend to be missed, and all three are on you rather than on the vendor.

1. The list. A cheap lookup does not tell you who belongs on the list. An hour spent deciding the audience saves a hundred poor messages.
2. The sender domain. Plan to have one you can afford to damage. Replacing a burnt domain means a new domain, new authentication and a fresh warm up.
3. The follow up inbox. Meetings need someone to attend them. If a calendar fills faster than you can take calls, the cost is the meetings you push back.

None of these is a reason to avoid the tool. They are the reason to write the whole model down before the trial starts, and to compare vendors on it rather than on a plan name.

How do you compare vendors fairly?

1. Price the same job: the same channels, the same volume, the same number of senders.
2. Add data, infrastructure and time for each.
3. Ask what is not included: seats, enrichment credits, overage, onboarding.
4. Compare cost per held meeting from a trial, not from a sales page.
5. Check what you can cancel. Sellinger has no lock in contracts and no setup fees on self serve plans.

Estimates in this post are our own arithmetic on inputs we list. Check the pricing page for current prices.