In California, it's the law now that if you see something listed for one price (either on the tag on the shelf or in an ad) and it scans for higher, it has to be sold at the lower price. But strangely enough, before Curcuit City closed for good, often times stuff on their Web site was cheaper than in the store. For example, I bought some speakers online, paid for them and picked them up at the closest store, and it was cheaper than just going in the store and buying them. I noticed soon before the end of business, they changed that so the store and online was one price. I think a lot of people besides me noticed the price differential and took advantage, and between that and idiots typing in wrong prices in corporate, it's no wonder Circuit City died.
*raises hand*
Nobody can seriously price-match online. Imagine BB or CC matching their $199. video card with that new online store, you know Gonz's Specials, that has the same card for $79.
As a side note, I hear that manufacturers are beginning to drop Plasma TV's from their lines. Apparently, the power consumption is so high that folks are complaining & returning them.