Disagree
Internet shopping is a tricky thing. Finding the best price for something usually means a lot of fiddling around, but in general Newegg are pretty good.
They are certainly a lot better than places like Best Buy, CompUSA and most of the large PC clone manufacturers.
It all depends on what you're looking for. I don't shop for desktops at Newegg, I shop for components to build desktops.
Processors, ram, video cards, that sort of thing. Sometimes I find a better price elsewhere but not often. It depends on the day, and if another website is offering a deal on a particular product I want.
The thing that people often don't remember to do is factor in the shipping cost. Cheaper products on a site that will only deliver by fedex or UPS can mean it's cheaper to shop elsewhere if the site charges a few bucks more for the product, but will ship via priority mail.
One thing I wouldn't consider would be to use an online store's chat site. Call me cynical, but if signing up for this doesn't result in either a lot of sales chat and a lot of spam I'd be astonished.