Microsoft has slashed the price of the Xbox 360 games console by $50 (£25) in a bid to compete with fierce competition from the Nintendo Wii and the Sony Playstation 3.
I have yet to see as good an example of how the benefits of competition come about - benefits that can accrue with only a few companies.
I concede Robin Hanson et al would castigate me for this example, though.
UPDATE: Kotaku informs me that Canadians will see a $100 price drop, not $50, because of exchange rates! Hrmm, I've been talking about stuff like that. Gee, maybe I will get an Xbox.