The $50 rule: when selling an old electronic isn't worth the data risk

Most of the guides here are about getting the most for your stuff. This one is the opposite: it's about when the right move is to not sell at all. Specifically, it's about old electronics: the drawer of dead phones, dusty tablets, and forgotten external hard drives that tends to build up somewhere in the house. The temptation is to list them. They were expensive once. Surely $20 is better than nothing.

For a lot of those devices, $20 is not better than nothing. The rule I go by is roughly this: if a device with storage is worth less than about $50 used, recycle it instead of selling it. The math doesn't favor the sale once you account for the time to wipe it properly and the small but real chance that some of your data goes out the door with it.

Why $50 is the rough cutoff

The math, in plain English. Wiping a device the right way (not just tapping "factory reset" and trusting the screen) takes real time once you account for backing up anything you want to keep, signing out of every connected account, turning on encryption if it isn't already on, and checking nothing's left behind. That's before you photograph it, list it, message a buyer, pack it, and ship it. Your numbers will vary, but for illustration, say the whole job takes an hour and a half for a small electronic.

On a $300 laptop, that's a reasonable trade. On a device that sells for $25, it works out to under $17 an hour before any fees or shipping, with the privacy risk of someone recovering a fragment of your data on top. Below the $50 line, the spread is too tight to absorb the small chance of a mistake. Above the line, the wipe effort is worth doing right and the resale value justifies the time. It's a heuristic, not a law (you can adjust it for your own threshold) but the shape is real.

What's actually on these devices (more than you think)

The rule wouldn't matter if storage devices were just phones and laptops. The reason it's worth knowing is that the list is much longer. Tablets and e-readers have your purchase history and signed-in accounts. Old external hard drives and USB sticks have whatever you put on them years ago and never thought about again. Smart speakers are signed in to your voice-assistant account; Amazon, for one, keeps Alexa voice recordings with your account in its cloud, so remove the speaker from your account as well as resetting it. Fitness trackers can hold location and health data. Gaming consoles have saved logins and downloaded games tied to your accounts. Dash cams can hold GPS-tagged video of where you drive. Smart TVs have streaming credentials. Some smart appliances (fridges with screens, washing machines with apps, security cameras, video doorbells) can hold your Wi-Fi credentials and account links on a chip you've never seen.

The general test is simple: if the device ever connected to your Wi-Fi or asked you to log in, assume it has storage worth treating carefully. The easy ones to overlook are in that second group: not the phones, but the small connected things nobody thinks of as computers.

A factory reset isn't always a wipe

This is the part that's easy to get wrong. "Factory reset" sounds like erasing a chalkboard. Whether it actually is depends on the device. On a device without encryption, a factory reset removes the OS-visible references to your data (the file system entries, the account links, the visible photos) but the underlying storage can still hold recoverable fragments. Encryption is what changes that. On a recent iPhone, "Erase All Content and Settings" throws away the encryption keys, which leaves the old data unreadable. Android phones that launched with Android 10 or later are required to encrypt their storage, and Macs with Apple silicon or a T2 chip encrypt their internal drive automatically. On Windows it depends on the device, the edition, and how it was set up, so check Settings > Privacy & security > Device encryption (or BitLocker) before you reset. On older devices, cheap tablets, and external drives you never encrypted, the gap between "reset" and "actually erased" is real.

The standards body NIST publishes the reference document on this, NIST Special Publication 800-88 Rev. 2 (September 2025), and it defines three levels. "Clear" is a logical wipe through the device's normal interface, meant to stop casual recovery; on a device that can't rewrite its own storage, a factory reset counts as a clear technique and nothing more. "Purge" goes further, with methods such as a full overwrite or cryptographic erase, and is meant to hold up against lab-grade recovery. "Destroy" is physical. So a factory reset on an unencrypted device sits at the lowest of the three, while the reset on an encrypted phone or Mac works by throwing away the keys, the cryptographic erase that NIST lists under purge. For something you're selling for $20, the right answer isn't to learn the difference and risk getting it slightly wrong. It's to skip the sale.

Where to take them instead, and what "secure recycling" actually means

Once you've decided not to sell, the next question is where the device should go. There are three kinds of options. Manufacturer take-back or trade-in programs, where the maker offers one, accept their own products; the maker's site will say what it takes and on what terms. Certified e-waste recyclers operate independently and are the right call for devices not covered by a manufacturer program. And many cities and counties run e-waste collection events or drop-off sites; your local government's site will say when and where.

Whichever you pick, the word that does the work is "certified." The two certifications worth recognizing are R2 (Responsible Recycling) and e-Stewards. Under both, an independent certifying body audits the recycler, and both standards require destroying the data on used electronics: not just recovering the metal. A certified recycler's website will say so, and the EPA points to the R2 and e-Stewards websites for finding one. For a manufacturer program, a municipal event, or any drop-off point, ask which certified recycler handles the devices before you hand anything over.

The point of the rule isn't to be paranoid; selling a recent phone with encryption on, after a proper reset, is a reasonable thing to do. The point is that for the cheapest end of the market, the math doesn't pencil out. The time you'd spend wiping it properly is worth more than the sale, and the residual risk has no upside. Below $50, recycle. Above $50, wipe it right and list it. The drawer empties out either way.