Adds average eBay price to Facebook Marketplace and Craigslist

Latest Version

Version
1.0.0.3
Update
September 22, 2019
Size
301KiB
Developer
Category
Users
248
Rating
4.125 ★
Manifest Version
2
Web Store Status
Languages Support
English (United States)
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Permissions
Tabs
Storage
Http://*.craigslist.org/*
Https://*.craigslist.org/*
Https://www.facebook.com/marketplace/*
Https://1ruet6pzk7.execute-api.us-east-2.amazonaws.com/*/ebayresolver/*
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Market Ninja Extension

Integrates average eBay prices for comparison into Facebook Marketplace and Craigslist. Stop trying to decide if the item is reasonably priced and let this extension do the work. Craigslist Deal Finder provides average prices found on eBay for each item on the page.

A list of the found eBay items can then be displayed by clicking the \"eBay Price\" button. This will display all the retrieved items and link them to the associated eBay web page.

If you're not getting the results you expect open up the search filter panel and modify it to fit your use case.
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Source Manifest.json

{"update_url": "https://clients2.google.com/service/update2/crx", "manifest_version": 2, "name": "Market Ninja", "description": "Adds average eBay price to Facebook Marketplace and Craigslist", "version": "1.0.0.3", "browser_action": { "default_icon": { "16": "icon_16_16.png" }, "default_popup": "html/extension.html" }, "icons": { "16": "icon_16_16.png", "48": "icon_48_48.png", "128": "icon_128_128.png" }, "background": { "scripts": [ "lib/js/jquery-3.0.0.min.js", "js/constants/customEvents.js", "js/helpers/resultHelper.js", "js/helpers/searchHelper.js", "js/extension.js" ] }, "permissions": [ "tabs", "storage", "http://*.craigslist.org/*", "https://*.craigslist.org/*", "https://www.facebook.com/marketplace/*", "https://1ruet6pzk7.execute-api.us-east-2.amazonaws.com/*/ebayresolver/*" ], "content_security_policy": "script-src 'self' https://ssl.google-analytics.com; object-src 'self'", "content_scripts": [{ "matches": [ "http://*.craigslist.org/*", "https://*.craigslist.org/*", "https://www.facebook.com/marketplace/*" ], "js": [ "lib/js/jquery-3.0.0.min.js", "lib/js/bootstrap.min.js", "lib/js/googleAnalytics.js", "js/storage/googleStorage.js", "js/sites/craigslist.js", "js/sites/facebook.js", "js/constants/customEvents.js", "js/readers/baseReader.js", "js/readers/craigslistReader.js", "js/readers/facebookReader.js", "js/modifiers/baseTemplate.js", "js/modifiers/baseModifier.js", "js/modifiers/craigslistModifier.js", "js/modifiers/facebookModifier.js" ], "css": [ "lib/css/bootstrap-iso.min.css", "css/custom.css" ] }], "web_accessible_resources": ["close.png"]}
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How to download and manually install Market Ninja extension for Chrome

Looking for a way to install Market Ninja extensions for Chrome, you can search for them in the Chrome Web Store, clicking the "Add to Chrome" button, and following the straightforward process.

However, you may need to install Market Ninja extensions manually, this article outlines two simple methods to effortlessly install Market Ninja extensions, whether they come as unpacked folders in compressed formats like .zip or as .crx files.

Method 1: Download Market Ninja extension and manually install through Drag &Drop

If you ever need to manually install a Market Ninja extension for Chrome, don't worry, it's a simple process. Just follow these easy steps, and you will have your extension ready to use in no time.

Step 1: Download the Market Ninja Extension by clicking the "Download CRX" button on the website.

Look for the Market Ninja extension you wish to install. Go to the website and download the Market Ninja extension package, which is usually a .CRX file and comes in a zipped file. Here ".crx" file is the format for Market Ninja extension that contains all the data.

Step 2: Extract &Arrange Files

Once the file is downloaded, extract that file into its own folder. Similarly, give that extension files a permanent home. In other words, keep it in a folder that you don't accidentally delete it because these files will be needed to make that extension work.

Step 3: Go to the Chrome Extensions Page

Open Google Chrome and in the address bar, type chrome://extensions; it will open the Google Chrome extensions page. Make sure that "My extensions" is selected in the sidebar.

Step 4: Drag and Drop the Extension

Now, go to the folder where you extracted the Market Ninja extension and drag &drop the extension file from there anywhere onto the extension page within Google Chrome.

Step 5: Complete the Installation

Once you drag and drop the extension file, follow the steps that Google Chrome takes you through. Similarly, if the extension file is of .crx file format, you will be required to review the permissions and then add the extension.

Now, you can manage that added extension as you would like to with any other Chrome extension that you added through Chrome Webstore. Its icon will also appear in the Google Chrome Menu on the right side of the address bar once you activate it.

Method 2: Download Market Ninja extension for Chrome and install in Developer Mode

This is another method to install Market Ninja extension manually, but the twist is that here, you install by enabling the developer mode option provided in Google Chrome. This mode is commonly used for testing extensions or running unpublished tools.

Step 1: Download the Market Ninja extension file

Select and download the Market Ninja extension by clicking the 'Download CRX' button on the website.

Step 2: Extract the downloaded contents

Convert the file to a ZIP file if it is in CRX format then extract the Market Ninja extension zip file or folder that you downloaded. Make sure you extract it using the same folder name and keep it safely in another folder, so you don't delete it by mistake. The extracted folder will be needed to keep your Market Ninja extension running.

Step 3: Open Chrome Extension Setting Page

In the address bar of Google Chrome, type chrome://extensions and open the Chrome Extension Page.

Step 4: Enable Developer Mode

After opening the Chrome Extension page, look at the top right side, and you will find the toggle option of "Developer mode."Simply enable that developer mode option.

Step 5: Load the Unpacked Extension

Once you enable the developer mode option, you will see the menu of Load Unpacked, Pack Extensions and Update. From that, select the option "Load unpacked."

Step 6: Select the Extension Folder

Once the pop-up opens upon clicking Load unpacked, select the Market Ninja extension directory and click on the "Select Folder "button.

Step 7: Confirm and Install

After you select an extension folder of a Google Chrome extension you're installing manually, confirm its installation for the final time and let the installation complete.

Conclusion

Here we've made a step-by-step guide on How to manually install Market Ninja extension in 2 ways. We hope this guide proves helpful.

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User reviews

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D B (ID: 000000d69d9fe2ab) Voted 2 ★ - Updated 07/17/2022 The extension is very bare - bones. Only a couple options and a lot of the data is just incorrect. The only price the items should be compared against is the sold items price. Meaning the price people are willing to pay for the item. It doesn't look like this extension can get that data. I'm surprised it took anyone this long to make an extension like this and it's a good start but they have a long ways to go. I'll check in periodically and increase the rating if the extension improves.

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Yikes (ID: 000000bd442fa964) Voted 5 ★ - Updated 10/30/2019 Awesome, this honestly has given me some side income. Can you write code that will drive around and pick up the FB marketplace items now?

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Russ Smith (ID: 0000006e0c5a814b) Voted 5 ★ - Updated 10/02/2019 Saw this briefly on reddit, and downloaded immediately. Within a few minutes, I already had a target and was on my way to get it. Totally Sweet! Radical! All the stars! Thanks for this creation! Working great for me! I'm excited to have this tool!

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Andrew Levy (ID: 0000000310bc41cb) Voted 5 ★ - Updated 08/28/2019 I didn't know anything like this existed. Love this extension!

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Alexis Bardon (ID: 000000914e682423) Voted 1 ★ - Updated 08/18/2019 broken, ruins the layout of the page completely