1-Click Ebay Snipe (Free, Unlimited) by 1ClickProduct

Click on any Ebay Auction to bid at the last second.

1-Click Ebay Snipe automates the process of placing your Ebay auction bid in the closing few seconds. This increases your chance of winning and avoids any chance of bidding wars.

• Free and Unlimited Snipes
• We place your bid seconds before the auction closes
• It's automatic (your computer does not need to be on)
• You can track your auctions (notifies if you win or are outbid)
• No download required (runs when your computer is off)
Youbidder is free to use. Spread the word to Ebay users and help everyone get the price they want. AutoBid today with this Ebay Item Extension is a button that lets you instantly schedule snipes without entering the item ID or URL by hand.

http://www.youbidder.com/HowItWorks

Addon uses 3rd party site (www.youbidder.com) for operation.

Wikipedia:
eBay Inc. (/ˈiːˌbeɪ/ EE-bay, stylized as ebay) is a multinational e-commerce corporation, facilitating online consumer-to-consumer and business-to-consumer sales. It is headquartered in San Jose, California. eBay was founded by Pierre Omidyar in 1995, and became a notable success story of the dot-com bubble. Today eBay is a multibillion-dollar business with operations in about 30 countries.

The company manages eBay.com, an online auction and shopping website in which people and businesses buy and sell a broad variety of goods and services worldwide. In addition to its auction-style sales, the website has since expanded to include "Buy It Now" shopping; shopping by UPC, ISBN, or other kind of SKU number (via Half.com); online classified advertisements (via Kijiji or eBay Classifieds); online event ticket trading (via StubHub); and other services. It previously offered online money transfers (via PayPal, which was a wholly owned subsidiary of eBay from 2002 until 2015). The website is free to use for buyers, but sellers are charged fees for listing items after a limited number of free listings, and again when those items are sold.