Valve have announced the Counter-Strike Weapons Market
, a system which will dynamically change the cost of weapons and items based on how many people are buying them:
Starting on October 11th, the prices of weapons and equipment in Counter-Strike: Source will be updated each week based on the global market demand for each item. As more people purchase a certain weapon, the price for that weapon will rise and other weapons will become less expensive.
Interesting change; it will no doubt cause a lot of division in the community, but I have to say it's nice to finally see something slightly fresher appearing in CS: Source.