An individual record is worth a fraction of a cent. The money is in aggregation, matching and recency — not in you specifically. That's deflating, and it's also the most useful thing to understand about the industry: your record has value because it can be joined to other records, which is exactly why a stable unique identifier like an email address matters far more than any single field in it.
Why individual records are near-worthless
Brokers deal in millions of records. Buyers want segments — "homeowners in this metro area who recently searched for X" — not individuals. Pricing is per thousand records, or a subscription for query access, and the per-person figure that falls out of that is tiny.
So the framing of "your data is being sold for a lot of money" is misleading. The dataset is valuable; your row in it is not, in isolation.
You'll find articles citing precise per-record prices. We're not repeating them, because reliable current pricing isn't published — this is a business-to-business market with negotiated contracts, not a price list. Figures that circulate tend to be old, from a single leaked contract, or from a vendor with an interest in the number being high.
We'd rather say the shape of the answer confidently than a specific figure we can't source. What we can verify about the industry
What actually drives value
- Matchability. The single biggest factor. A record that can be joined to other datasets is worth far more than an isolated one — which is why a stable, unique identifier is the prize.
- Recency. A current address and a recent purchase signal are worth more than five-year-old data.
- Intent signals. Evidence you're about to buy something specific is the highest-value category, which is why browsing and search behaviour is collected so aggressively.
- Financial and demographic attributes. Homeownership, estimated income, life events like moving or having a child.
- Verification. Data confirmed against multiple sources beats data from one.
Why this makes email the key
Everything above depends on matching, and matching needs an identifier that's stable, unique and used across unrelated services.
Names are ambiguous. Postal addresses change when you move. Phone numbers change. An email address is unique to you, stable for years, and the same string appears in the retailer's database, the airline's, the newsletter's and the app's — so it's what stitches them together.
Your address isn't valuable because someone wants to email you. It's valuable because it's the join key. Why brokers want it specifically
What follows from that
If value comes from matchability, then breaking matchability is the countermeasure — and it's the one thing available to you that doesn't require anyone's cooperation.
Give each organisation a different address, and each broker holds a fragment that joins to nothing. The data can still be sold; what's sold is an orphan record worth even less than the fraction of a cent it started at, and one that names its own source if it's ever used. How
The framing worth resisting
"Your data is worth thousands and they're stealing it from you" is a compelling story and mostly wrong. The realistic position: your individual record is worth very little, the aggregate is worth a great deal to the people assembling it, and you can't capture that value yourself.
What you can do is stop being easy to assemble. That's a smaller claim and an achievable one. Removal vs prevention