The cheapest way to get clients, and what it really costs.
Cheap leads are not the same as cheap clients. Here is how to compare channels by the number that matters, and where AI calling changes the maths.
Measure cost per client, not cost per lead
Most published prices for “lead generation” count leads, not paying clients. A cheap lead that never buys is expensive. Before comparing channels, work out one number: what you can afford to spend to win one client. A simple version is your average first-year profit per client divided by three. Anything that reliably wins clients below that figure is cheap for you, whatever it costs per lead.
The cheapest channels, roughly in order
- Referrals and introductions. Close to free in cash; the cost is your time asking. Usually the highest-converting source a small business has.
- Past customers, old quotes and quiet enquiries. People who already know you. A list you own, so every message costs almost nothing.
- Direct outreach you run yourself. Email and phone to a well-chosen list. Cheap in cash, expensive in hours, which is exactly the part AI calling now takes over.
- Search visibility and content. Low cost per enquiry once it works, but it takes months to build.
- Paid ads and events. Fast and scalable, and usually the most expensive per client for a small business, because you pay for every click or stand whether or not anyone buys.
There is no reliable independent benchmark that proves one channel is cheapest for every UK sector; treat any single “average cost per lead” figure with suspicion and test with a small budget.
What does outbound calling really cost?
Here is an illustration using public industry benchmarks rather than promises. Of 100 dials, published studies put live conversations at roughly 10 to 17; say 15. About 2 or 3 turn into a meeting. If a conversation lasts about two minutes, 15 conversations are around 30 minutes of talking.
- Doing it yourself: 100 dials with voicemails and redials takes most of a working day of an owner's time.
- With an AI calling agent at 12p per connected minute: about 30 connected minutes is roughly £3.60 of calling for the same 100 dials, placed during your chosen hours while you work on something else. Voicemails and longer conversations add to this.
Your answer rate, list quality and offer will move these numbers a lot. The point is the order of magnitude: the expensive part of outreach was always human time, and that is the part AI now does.
Sources: Instantly, B2B cold calling 2025 (16.6% of dials reach a live conversation; about 8 attempts to reach a prospect); Belkins, cold calling benchmarks 2026 (9.9% connect per dial, 24.5% per prospect after follow-up calls); SalesHive, cold calling KPIs (roughly 2 to 3 meetings per 100 dials). Figures are industry benchmarks, not FoxEra results; your list, offer and market decide your numbers.
Spend less by being more precise
- Shrink the list. Fewer, better-fit prospects cost less and convert better.
- Follow up. Most conversations happen on the second to eighth attempt; stopping after one call wastes the first.
- Sharpen the first line. Say who you help and one concrete result in the first ten seconds. See what a good calling script sounds like.
- Track outcomes, not activity. Count conversations, meetings and clients per pound, not dials.
Let your AI assistant run the cheap channel for you
You can now hand this work to the AI assistant you already use. FoxEra Calls connects to ChatGPT, Claude, Cursor and other AI agents, so you can say “add these 30 dentists and have Cass call them tomorrow at 10” and it builds the campaign, shows you exactly how many people will be phoned and waits for your yes. See how to connect your AI assistant.
The rules that keep it cheap
In the UK, marketing calls must be screened against the Telephone Preference Service (TPS) and the Corporate TPS unless the person has agreed to hear from you, and you must say who you are and respect anyone who asks you to stop. Marketing emails to limited companies do not need prior consent, but emails to sole traders and some partnerships usually do. The ICO guidance on direct marketing is the authority; read our plain-English summary in is cold calling legal in the UK.
A complaint or a fine is the most expensive way to get a client; screening and honest identification are part of the price.
Frequently asked questions
What is the cheapest way to get new clients?
Referrals and re-contacting past customers and old enquiries cost almost nothing in cash. After that, direct outreach you control, such as calling a well-chosen list, is usually cheaper per client than paid ads, especially when AI handles the dialling.
How much does AI cold calling cost?
FoxEra Calls charges from 12p per connected minute with no subscription, and new accounts get 7 pounds of free credit. A typical two-minute conversation is about 24p.
Are Google Ads cheaper than cold calling for a small business?
Usually not per client. Ads bring faster enquiries but you pay for every click, and published UK cost-per-lead ranges for B2B services are wide. Test both with a small budget and compare cost per paying client.
How can I spend less on getting clients?
Target a smaller, better-fit list, follow up consistently, measure cost per client rather than per lead, and automate the repetitive work such as dialling with an AI calling agent.