The Marines are buying 2288 Mine Resistance Ambush Protected (MRAPS) trucks for Iraq. That's $500,000 per vehicle, which is a lot. Details here
Lets hope the things are really mine proof. Be a shame if after spending all that money a bigger land mine can take them out. These things don't carry much in the way of armament, they hope to carry enough armor to keep the crew safe without giving much, if any, offensive power. It's a defensive weapon. Are we buying a mobile Maginot Line?