Buy leads: what you are really paying for, and what to check first

What does it mean to buy leads?

To buy leads is to pay a third party for contact details of people or businesses that may want what you sell. You can buy a one-time list, subscribe to a B2B data provider or pay per lead from a marketplace. The price is only part of the cost: accuracy, exclusivity and legal compliance decide whether bought leads pay back.

The word "lead" hides two different products, and mixing them up is the most expensive mistake in this market. The FTC, in its staff report on the industry, defines a lead as someone who has indicated, directly or indirectly, interest in buying a product. That is typically a consumer who filled in a web form. The company that collected the form then sells that lead on.

In B2B, a "lead" usually means something weaker: a business and its contact details taken from a database, with no sign of interest at all. Strictly speaking that is a prospect, and the difference matters for how you contact it. Our guide to the difference between a lead and a prospect explains it. When you read "leads for sale", check which of the two the seller means.

What are the four ways to buy sales leads?

You can buy sales leads as a one-time list, through a data subscription, per lead from a marketplace, or as a done-for-you service. The table compares them on what you receive, how you pay and where it usually goes wrong.

The table leaves out a fifth route, building the list yourself, which we cover below. Which of the five fits depends less on price than on who else already has the same contact and how recent the record is. For a wider view of all routes, see our guide on how to get leads and the overview of lead generation.

Are bought leads worth it?

Bought leads are worth it only if the cost per customer is lower than your other channels, and that depends on freshness, exclusivity and your follow-up speed: a lead you pay for and never contact quickly is a pure loss.

The FTC describes how consumer leads travel: from a website publisher to aggregators, then to the merchants who buy them. In the same report the agency notes that consumers may not know their information can be sold and re-sold multiple times, so they are contacted by several marketers. For you as a buyer, that means a shared lead arrives already contested.

Instead of trusting a price per lead, work out what each customer really costs you:

1. Usable contacts = records you paid for minus wrong numbers, bounced emails and closed businesses.
2. Conversations = usable contacts that answer you.
3. Customers = conversations that become deals.
4. Cost per customer = total spend on the batch, plus your time, divided by customers.

Run this on a small paid batch before you buy a large one. If you cannot measure the first three numbers, you cannot judge the vendor. A simple way to track them is a lead scoring model in a CRM, where each contact carries its source and outcome.

What should you check before you buy leads?

Before paying, check where the data came from, when it was collected, how many other buyers have it and what happens when it is wrong. Use this checklist with every seller, and write down the answers.

1. Source. Ask where each record comes from: public listings, a web form, a licensed database or a scrape. "Proprietary" is not an answer.
2. Collection date. Businesses close, move and change numbers. Ask for the date of each record, not of the file.
3. Exclusivity. Ask in writing how many buyers receive each lead and whether the file is resold.
4. Fit. Request a sample for your exact category and city, such as roofers in Tampa or dentists in Austin, not a national average.
5. Verification. Ask how emails and phones were checked and when. Then check a sample yourself with a verification pass.
6. Replacement terms. A fair seller replaces or credits invalid records within a stated window. Get the window and the rules in writing.
7. Compliance. Ask whether consumer numbers are checked against the Do Not Call Registry and whether the seller is registered where registration is required.
8. A small first order. Buy the smallest batch available and measure the four numbers above.

One more filter is how the data reaches you. A file you can export and keep is worth more than a login that expires with your plan. The guide to a business leads database shows how to turn any file into a working pipeline.

What are the US rules for contacting bought leads?

In the United States, the FTC does not regulate buying a list, only sending to it. Email, phone and the seller's own status each have their own rules. This is general information, not legal advice.

• Email. In its CAN-SPAM compliance guide, the FTC states that the law makes no exception for business-to-business email, that you must honor an opt-out request within 10 business days and that each violating email can bring penalties of up to $53,088. It also says that if you hire another company to handle your email marketing, you cannot contract away your legal responsibility.
• Phone. The FTC's Telemarketing Sales Rule guidance lists business-to-business solicitation calls as exempt, unless they involve the sale of nondurable office or cleaning supplies. Calls to consumers are a different matter, with Do Not Call rules.
• The seller. California defines a data broker as a business that does not have a relationship with you but collects and sells your personal information anyway, and requires data brokers to register every year. If your vendor sells personal information about people it has no relationship with, ask whether it is registered.

Your vendor's promises do not move the responsibility. If a bought list generates complaints, the sender answers for it. If you also sell in Europe, data protection law adds more requirements, which we cover in our guides on cold email.

Is it better to buy leads or build your own list?

For local B2B targets, building your own list from Google Maps is usually the better first move, because you choose the exact city and category and the data is current. Buying is better for roles and companies that Maps does not show.

Take a freelancer selling websites to HVAC contractors in Phoenix, or an agency selling reputation management to dentists in Austin. Their buyers are local businesses that are listed on Google Maps, so a vendor has little to add to what a live map search already gives.

A mixed approach is common: build the local base yourself and buy only for the gaps. To try the first half, follow these five steps:

1. Define the target. One business type, one named area, one decision maker.
2. Search Google Maps for that type in that area.
3. Capture the results. Vonsel gathers Maps results as you explore the map and visits the available business websites to find published emails and extra phone numbers. What it finds depends on what each website publishes.
4. Organise the list in a CRM with a status per business, so you can see who was contacted and who replied.
5. Contact within the rules above, starting with a small test batch.

To see the extraction step in action, watch the tutorial video on the landing page. The pricing page shows what each plan includes, and our guide to prospecting with Google Maps data goes deeper on the workflow.

The short version

• "Buying leads" covers four models; check which one a seller really offers.
• Ask who else has the same lead, and where and when it was collected.
• Measure cost per customer on a small batch before you scale.
• You are responsible for how you contact leads, whoever sold them.
• For local targets, build from Google Maps and buy only to fill gaps.