Selliesell what you don't need

Logitech M720 Triathlon Multi-Device Wireless Mouse – Black, Bluetooth/Unifying, 3-Device Easy-Switch

Listed

✅Reading tags and identifying the item
✅Fixing light, then making a stock-quality cover and a model photo (each scored for honesty and quality)
✅Pricing for each platform from your floor
✅Writing a listing for each platform
✅Putting it up for sale on your Shopify store

Your Shopify store

Live

A real listing anyone can check out on, at $22.00.

Store password: beuwho

Try buying it. Pay with the test card: Card number 1 (Shopify's test gateway), any name, any future date, any 3-digit code. This page updates by itself when the order comes in.

Photos

Logitech M720 Triathlon Multi-Device Wireless Mouse – Black, Bluetooth/Unifying, 3-Device Easy-Switch: front

Fixed

What we found

Logitech · Wireless computer mouse · black/gray

good · Light surface scuffs and wear marks on the top shell from normal use; Light dust/debris visible on the surface

Usually sells for $15.00–$28.00

• Is the Logitech Unifying USB receiver included? (It stores inside the battery compartment.) This significantly affects value.

• Does the mouse power on and connect properly, and do all buttons, the scroll wheel (including free-spin mode), and the Easy-Switch 1-2-3 button work correctly?

• Any double-clicking issues with the left or right buttons?

• Is the battery door present and is the battery compartment free of corrosion? Is a AA battery included?

• Can you provide a photo of the underside (sensor, feet, model label) and the battery compartment?

• Is the original box or any packaging/documentation included?

• Any wear on the rubber side grips or thumb area not visible in this photo?

Where it sells best

Platform	List at	Accept ≥	You keep
Facebook Marketplace	$27.00	$5.00	$21.60

Facebook Marketplace

Ready

List at $27.00 · accept offers from $5.00

Logitech M720 Triathlon Wireless Bluetooth Mouse, Black

Logitech M720 Triathlon wireless mouse, black/gray. Connects by Bluetooth or Logitech Unifying receiver, and pairs with up to 3 devices using the Easy-Switch button. Ergonomic shape with a hyper-fast scroll wheel. Great for office or home use. Condition: Good, used. Light scuffs and wear marks on the top shell from normal use, and some light dust/debris on the surface. Local pickup only. Pickup area: [your neighborhood].

Open Facebook Marketplace

AI used for this item

$0.75 total

Step	Answered by	Time	Cost
Identify item	claude-opus-5.5 anthropic	11.8s	$0.0280
Write listings	claude-sonnet-5.5 anthropic	6.4s	$0.0107
Grade photos	claude-haiku-5.5 anthropic	2.6s	$0.0004
Item outline	gemini-nano-banana-2.1 google	9.0s	$0.0381
Honesty check	claude-sonnet-5.5 anthropic	4.0s	$0.0125
Item outline	gemini-nano-banana-2.1 google	8.7s	$0.0380
Honesty check	claude-sonnet-5.5 anthropic	2.6s	$0.0114
AI model photo	gemini-3-pro-image google	17.0s	$0.1402
Honesty check	claude-sonnet-5.5 anthropic	4.0s	$0.0135
AI model photo	gemini-3-pro-image google	18.0s	$0.1401
Honesty check	claude-sonnet-5.5 anthropic	4.5s	$0.0138
AI model photo	gemini-3-pro-image google	16.8s	$0.1394
Honesty check	claude-sonnet-5.5 anthropic	3.6s	$0.0130
AI model photo	gemini-3-pro-image google	18.2s	$0.1396
Honesty check	claude-sonnet-5.5 anthropic	3.8s	$0.0130

Demo: simulate an outage of every primary model (the next AI steps fall back)

How Sellie picks models

Identify item · photos → details

claude-opus-5.5 → claude-sonnet-5.5 → claude-opus-5

Reading tags right sets the price, and it runs once per item, so it gets the strongest vision model.

Providers tried per model: anthropic, vertex, bedrock

Grade photos · photos → scores

claude-haiku-5.5 → claude-sonnet-5.5

A simple good/fixable/retake call; Haiku is ~40× cheaper than Opus and the fastest.

Providers tried per model: anthropic, vertex, bedrock

Write listings · text → text

claude-sonnet-5.5 → claude-haiku-5.5 → claude-opus-5.5

Good marketplace copy at half Opus's price and faster; nothing here needs top-tier reasoning.

Providers tried per model: anthropic, vertex, bedrock

Honesty check · photos → verdict

claude-sonnet-5.5 → claude-opus-5.5

Runs on every edited image and must catch changed items reliably; Sonnet balances both.

Providers tried per model: anthropic, vertex, bedrock

Item outline · photo → mask

gemini-nano-banana-2.1 → gemini-3.1-flash-image → gemini-2.5-flash-image

Output is just black and white, so the fastest, cheapest image model wins (~$0.03).

Providers tried per model: google, vertex

AI model photo · photos → photo

gemini-3-pro-image → gemini-nano-banana-2.1 → gemini-3.1-flash-image

Buyers see it, so it gets the most faithful image model (~$0.13); cheaper backups are still gated by the honesty check.

Providers tried per model: google, vertex

Sold it?

Tap where it sold. We lock it and list what to take down.