Deals:
dealnews
Tech Bargains
Slick Deals
Deal Sites
Deal Catcher
Devsdeals

Prices:
bottom dollar
pricegrabber
"Froogle" (google)
Sales Circulars (retail brick-and-mortar prices)

Reviews:
epinions
Reseller Ratings
Bizrate

Gas Prices:
Gas Buddy
Gas Price Watch

Excellent Sites to buy Tech:

http://www.newegg.com
http://www.zipzoomfly.com
http://www.monarchcomputer.com

I've had pretty good luck with http://www.ecost.com/

I've had good luck with Pricewatch for computer stuff.

My favorite is Fat wallet for deals.

Fatwallet Hot deals

Just found this cool site: Don't buy junk.

This seems a good search engine for finding tech deals

Clipfire

Passwird

Freebie Blogs:
Free After Rebate
Cheap Stingy Freebies

Some off-the-beaten-path Car buying resources (been a subject lately):
Wikicars
Earl Stewart on Cars - Car Dealer spills the beans on his own industry.

Also, a pretty good Consumer Advocacy blog:
The Consumerist