How to Sell Your Used Tech Inside ChatGPT

SELLIT9 is now an app inside ChatGPT. You can ask what your phone, your camera or your old games console is worth, get the real price straight from our live catalogue, and place the order without ever leaving the conversation. No listing to write, no strangers to meet, no forms to fill in.

We recorded the whole thing and cut nothing out. Six and a half minutes, one real iPhone 15 Pro Max, one real order. Watch it here, or follow the written walkthrough underneath.

We filmed it with a phone because a drawer with an old phone in it is the thing almost everyone has. The same six steps work for a camera, a MacBook or a pair of speakers, and there are twenty-two category groups in the catalogue to choose from.

What does it mean that SELLIT9 is live in ChatGPT?

ChatGPT can now call SELLIT9 directly. Ask it about selling a phone and it queries the same catalogue our website runs on, reads back the price for your exact configuration, and creates the order once you approve it.

That second half is what separates this from asking an assistant for a rough resale estimate. The number you see is the number we pay, and you choose how you take it, cash by Interac e-Transfer or store credit with one of our partners. The order exists in our system the moment you confirm it, with a prepaid shipping label attached.

We shipped the same thing in Claude first, back in August, and that walkthrough runs across the whole catalogue rather than one phone. Both are listed on our AI connectors page. The longer argument for why we build commerce this way is in an earlier post on needing less frontend, not a better one.

How do you add SELLIT9 to ChatGPT?

Under a minute, and you only do it once.

• Open the app directory. In ChatGPT, open the apps menu underneath the message box and search for SELLIT9.
• Add it. It appears under Public, described as selling used tech for cash. One click and it is available in every chat.
• Start talking. Type the app name followed by your request, or just describe the phone in plain language and let ChatGPT reach for the right app itself.

How selling works in ChatGPT, step by step

Here is the exact sequence from the recording, start to finish.

1. Say what you are selling. We typed one sentence: I want to sell my iPhone 15 Pro Max, walk me through it. Name a camera or a console instead and the flow is identical.
2. Answer two questions. Storage and battery health, the two answers that move the price. They arrive as options you tap rather than boxes you type into. A quote built on a typo is worse than no quote.
3. Read the price for each condition. Not one number, four, so you can see exactly what the difference between a scratch and a crack is worth.
4. Pick your condition honestly. We chose Flawless and the offer locked at $805.
5. Give a postal code. It checks what collection options exist where you live rather than assuming.
6. Confirm in words. It reads the whole order back and waits for you to type Confirm order before anything is created.

Step two is the one worth pausing on. It does not guess your battery health. It tells you to read the number off your own phone, in Settings, then Battery, then Battery Health and Charging, and Apple explains where to find it if you have never looked.

Where do the prices come from?

The live catalogue, the same one behind every page on this site. For a 512GB iPhone 15 Pro Max with battery health at 90 percent or higher, here is what it returned on 15 September 2026.

• Flawless, $805. Nearly perfect. One or two almost invisible marks at most, no dents, cracks or screen defects.
• Good, $735. Faint scratches or minor wear, nothing cracked or dented, everything works.
• Used, $645. Obvious or deeper scratches and dents, no cracks, screen and functions still work.
• Single Defect, $565. Powers on but has one specific fault, like a broken screen, a bad microphone or a missing button.

Prices move, so treat those four as a snapshot rather than a promise. The point is not the numbers, it is that there is no second price list for the assistant to drift away from. Whatever your own chat returns is what we will pay.

What you can ask it to do, and what it will not do

Worth knowing before you start, so you are not fighting it.

• It can search the whole catalogue. Cameras, laptops, consoles, PC parts and soundbars sit alongside the phones.
• It can price an exact configuration. Storage, battery health and condition, not a model average.
• It can check collection options for your postal code. What is available in downtown Toronto and what is available in a small town are not always the same.
• It can look an order up afterwards. Come back a week later in the same chat and ask where your order is.
• It will not invent a price. If something is not in the catalogue, it says so instead of estimating.
• It will not create anything until you say yes. Asking about a price never books anything.

It also will not negotiate, which surprises people. The price is the price, and asking nicely does not move it.

What happens after you confirm the order

You give it your name, phone number, contact email and the email that should receive the payout. It also asks you to confirm the phone is fully paid off, free of any carrier lock and not blacklisted, which is the polite way of saying a phone you are still paying for is not yours to sell yet.

Then it writes the order, and you land on a normal SELLIT9 order page. Nothing about that page knows or cares that it was created from a chat window.

From there it runs like any other sale. A prepaid label arrives with a QR code, so no printer is needed. Show the code at the carrier counter, or use a drop-off point instead. Shipping is free anywhere in Canada. When it reaches us we check it against the condition you picked, and once assessed the payout usually goes out the same day by Interac e-Transfer.

It is worth being precise about the approval step, because it is not a browser permission popup. ChatGPT is not asking whether it may run a tool. The guardrail sits in the connector itself: reading the catalogue is free, writing an order is not, and the order step is built to stop and ask in plain words first. If you want an assistant that can look but never touch without permission, that distinction is the whole ballgame.

When is ChatGPT not the right way to sell?

Two honest cases.

• You want the absolute highest number. A well written marketplace listing will usually beat a buyback price, and if you have the patience for messages and meetups, take it. Pricing and reselling used tech is a real skill, and the people who do it for a living are who sits on the other side of a SELLIT9 sale. You are paying us so that none of it lands on you.
• You are not already in ChatGPT. Nobody should install an app just to sell one phone. If the assistant is not already open in front of you, the quote on our site takes about forty seconds and skips the setup entirely.

Questions people actually ask

Is the price in ChatGPT the same as on the website?

Yes. Same catalogue, same numbers, same conditions. The app is another way in, not a separate offer.

How do I get paid?

By Interac e-Transfer to the email you give during the order, or as store credit with a partner if you would rather have that. Payment follows inspection, so it is not instant.

What if my phone is not in the condition I chose?

We tell you. If what arrives does not match what was quoted, you get a revised offer and you decide what happens next. Guessing generously does not get you a better price, it just adds a few days.

What else can I sell this way?

Twenty-two category groups are live right now, and the four most recent are microphones, soundbars, VR headsets and AI glasses. A camera body, a pile of PC parts and a soundbar all go through the same six steps. The full catalogue is here, and phones are here if that is what you came for.

Does this work outside Canada?

Everything in this walkthrough is Canadian. Prices are in Canadian dollars, the payout is an Interac e-Transfer and the prepaid label covers shipping within Canada. If you are in Toronto, that is the exact flow you just read.

Start with a price

Add SELLIT9 in ChatGPT and ask what your phone is worth, or get the same quote on the site. Both end up in the same catalogue, and both end with a prepaid label and an e-Transfer.