Product Service engines provide the facility to advertisers to enter feeds of their service databases. When a user searches for a service, links to advertisers are displayed for that particular service. Service engines provide more priority to advertisers who pay more; however, the user can also sort service by price or other criteria. Some pay per click product engines have expanded into the service space, while other service engines operate in specific vertical markets.

Google Product Search is Google's shopping search engine.You can search and product here from any quality and budget. This search engine almost have all products. Some products names we are showing here. For more information you can search these products in Google product search engines.

chess set
emerald ring
kitchen scale
dominoes
bedskirt
mustache trimmer
antenna
chai tea
mechanical pencil
bean bag
gas fireplace
cordless drill
videophone
video card
flat screen tv
spa pump
slide scanner
men's cashmere sweater
hotwheels
quilt
pumps
clear computer case
sapphire pendant
hole punch
glossy photo paper

Google Product Search helps shoppers find and buy products across the web. As a seller, you can submit your products to Google Product Search, allowing shoppers to quickly and easily find your site.

Increase traffic and sales
Product Search connects your products to the shoppers searching for them, helping you drive traffic and sales to your store. Your products will appear on Google Product Search and may even be displayed on Google.com, depending on your items' relevance.

Submit products for free
Inclusion of your products is completely free. There are no charges for uploading your items or the additional traffic you receive.

Reach qualified shoppers
Reach shoppers precisely when they are searching for items to buy on Google.

The following PPC product service engines are:

• Nextag.com
• Sidestep
• TripAdvisor
  
  Pay per Call PPC
  
  Pay per click business model allows publishers to charge local advertisers on a per – telephone- call basis for each sales lead, the publishers generate. Pay per call is not restricted only to local advertisers, many of the pay per call search engines allow national advertisers with local telephone numbers. According to the Kelsey Group, the Pay per call market is being expected to reach us $3, 7 billon by 2010.
  
  Pay per Delivery PPC
  
  Pay per Delivery is a variation on pay per click used in mail marketing. Email marketing companies are charged on successful delivered email basis.
  
  Pay Per Action PPC
  
  Pay Per Action PPA is a variation on pay per click based in many search engines. An advertiser pays a specified amount upon successful completion of some action (ie, conversion, sales lead, or sale).