On the internet, a price comparison service (also known as shopping comparison or price engine) allows individuals to see different lists of prices for specific products. Most price comparison services do not sell products themselves, but source prices from retailers from whom users can buy. In the UK, these services made between £120m and £140m in revenue in 2005 , and is growing at an annual rate of 30% to 50%.

History

The internet boom of the late 1990s made price comparison profitable.

Price comparison services were initially implemented as client-side add-ins to the Netscape and Internet explorer browsers, and required that additional software be downloaded and installed. After these initial efforts, comparison shopping migrated to the server so that the service would be accessible to anyone with a browser.

Services are now offered by websites dedicated to price comparison and by major portals such as Yahoo!.

Shopping

In the late 1990s, as more people gained access to the internet, a range of shopping portals were built that listed retailers for specific product genres. Retailers listed paid the website a fixed fee for appearing. These were little more than an online version of the Yellow Pages. As technology has improved, a newer "breed" of shopping Web portals is being created that are changing both the business model and the features and functionality offered. These sites do not "aggregate" data-feeds provided from the retailers, they search and retrieve the data directly from each retailer site. This allows for a much more comprehensive list of retailers and the ability to update the data in real-time.

Generic portals and search engines launched similar services and companies that stood to benefit from increased internet shopping (especially credit card and delivery firms) launched similar sites. Many of these services have since closed.

From Wikipedia under the GNU Free Documentation License
Thu Oct 8 06:51:13 2009

Cheaper options for getting around SE England by rail?
Q. My husband and I are planning a trip to England this summer and we are looking into taking some excursion trips from London to Stratford Upon Avon and Bath. I've been pricing the rail trips for this on National Rail and in comparison to what we pay for train service in the Netherlands the prices are insane. Is there a discount card or four day pass or some other value option that insiders know about that could save us travel costs on our trip?
Asked by Elizabeth N - Mon May 12 04:59:08 2008 - - 1 Answers - 0 Comments

A. check out the railcard website - there is a south east network card that you can buy for UK20 which gives you 1/3 off your fares. I usually buy the family railcard when I'm home in the UK for a holiday and even though I only use it for a few weeks, it is worth buying rather than paying the full fare.
Answered by BigSis - Wed May 14 10:48:22 2008

Upright Frost-Free Fridge-Freezer & Best Deal Available Help Requested Please.?
Q. Hello and good evening. This is a question for UK only readers. After 30 years of faithful service,my old fridge-freezer will be in need of replacement soon.I've got arthritis in many parts of my body and bending down is proving more and more problematic. I am looking for a new upright fridge-freezer which must be frost-free. It is essential for me to have the freezer compartment on the top and the fridge at the bottom.The freezer part must have a minimum of three large compartments. I would also appreciate help with where the best deals are on such fridge-freezers. Size of and storage of such a fridge-freezer is not a problem. I have been on several price comparison websites,but there's nothing better than reading answers from users… [cont.]
Asked by Big L 266 - Mon Nov 5 15:48:32 2007 - - 1 Answers - 0 Comments

A. Hi Ive seen one advertised on TV for a silver upright fridge /freezer for 150 its silver not to sure about the freezer at the top, or frost free although it should be, and that was for comet Hope thats helpful. Just look on the website www.comet.co.uk
Answered by vikki w - Mon Nov 5 16:00:44 2007

Laptop Comparison?
Q. I dont know which laptop to buy out of these two that I customized: HP dv2700t Operating system - Genuine Windows Vista Home Premium with Service Pack 1 (32-bit) Processor - Intel(R) Core(TM) 2 Duo Processor T8100 (2.10GHz) Display - 14.1" diagonal WXGA High-Definition HP BrightView Widescreen Display (1280 x 800) Memory - FREE Upgrade to 3GB DDR2 System Memory (2 Dimm) from 2GB DDR2 System Memory (2 Dimm)!! Graphics Card - 128Mb nvidia geForce 8400M GS Personalization - HP Imprint Finish (Radiance) + Webcam + Microphone Networking - Intel(R) PRO/Wireless 4965AGN Network Connection Hard Drive - 160GB 5400Rpm sata hard Drive Primary CD/DVD Drive - SuperMulti 8X DVD+/-R/RW with Double Layer Support TV & Entertainment Experience - No… [cont.]
Asked by Austin The Designer - Mon May 5 19:28:38 2008 - - 4 Answers - 0 Comments

A. hp
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nextag price alert gif
lesjones.com
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I sometimes use Nextag s price alert service Enter your email address and a target price and Nextag will email you when the price drops below that amount One little noticed feature of Nextag is a record of the date the product first appeared on the site I ve occasionally used that to get a ballpark estimate of when a product was introduced

Shopping Feeds and Comparison Shopping Engine jpg
info-sourcing.com
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Shopping feeds and comparison shopping engine is one of the ways to achieve high traffic to your e commerce website apart from PPC and organic results InfoSourcing s data

Shopping+Service+Protection+Price+Comparison+etc jpg
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Shopping+Servic​e+Protection+Pr​ice+Comparison+​etc jpg
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Shopping Services Commercial Select a state or featured city below to locate Shopping Services Commercial business listings There is a complete list of cities if you select a state

From Yahoo Image Search: "Price comparison services"
Mon Aug 31 17:22:39 2009

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occasionaldrivel.com
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PriceCanada is an online . price comparison service. . They have a similar business model to PriceGrabber, BizRate, NexTag, or any of dozens of other online . price comparison. tools. The difference that makes them stand out for me is that ...

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Today, the cell phone plan . comparison. is not just about the . price. , people now look into the quality, value-added features and most importantly effective customer . service. that the plan's network carrier can offer. Tags: Cell Phone Plans; ...

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The US makes far more intensive use of specialist physicians and pays them far more in real terms in . comparison. with other OECD economies. In . comparison. , the supply of primary care physicians is well below average for other countries, ... If you receive a set fee for a . service. or good, how do you make more money? Greater volume .we all know this. Setting further . price. controls will only exacerbate this utilization problem. More coordination of care and pay incentive for ...