I’m most likely to need the information in the top third of this chart, myself, but I continued it all the way through 100 kg, for the benefit of those with much more money to invest in silver than I have.

How much does silver cost, per troy ounce? Right now, it’s in the $15 neighborhood, but that changes all the time. This is the website I use to keep an eye on the “spot” price of silver, but there are many other such sources, as well.