Books

1. amazon.com
2. bn.com
3. buy.com
4. addall.com
5. bookpool.com
6. booksamillion.com
7. booksprice.com
8. getcheapbooks.com

Discounts

1. dealsea.com
2. deals2buy.com
3. fatwallet.com
4. monoprice.com
5. newegg.com
6. slickdeals.net
7. techbargains.com
8. electronicexpress.com

Price Comparison

1. nextag.com
2. pricescan.com
3. pricegrabber.com
4. bizrate.com

Travel

1. expedia.com
2. travelocity.com
3. travelzoo.com
4. cheaptickets.com
5. priceline.com
6. orbitz.com
7. sta-travel.com
8. airninja.com

1. carfax.com
2. kbb.com
3. edmunds.com
4. vehix.com