How much does it cost to buy the olympic medals?

Answer 1

They're not exactly for sale generally.

If you're asking how much they would cost if they were just generic lumps of metal and not specifically olympic medals...

The IOC specifies that the medals must be at least 60mm in diameter and at least 3 mm thick. The silver medal is made of silver (duh), at least 92.5% pure. The gold one is (perhaps surprisingly) also made mainly of 0.925 pure silver, but coated with 6 grams of pure gold. The bronze medal is, well, bronze. Metal prices vary significantly, and the host city has some flexibility in designing the medals as long as they meet the minimum specifications (if a host city wanted to give out medals the size of manhole covers, I don't think they're specifically prohibited from doing so), making it very difficult to come up with a generic value.