Silver prices are tied into commodity prices, and therefore we need to take a look at the long term trends in commodities to determine when teh next uptike will occur. If you look at this chart her eyou can clearly see that we are in the bottom part of the commodity cycle that will begin to increase by 2025, and then skyrocket into 2035 - you're looking at 20 fold gains in the price of silver during the next commodity cycle - but you'll see 20 fold gains in the price of milk, sugar, water, and every other commodity as well. Depending on how severe the societial shock is simultaneously, we may experience a panic in the price of silver, resulting in peaks well above $500 an ounce - I know it seems rediculous, but it's not off the cards - afterall, silver did spike to $150 an ounce back in 1980....if a similar spike happens again, combined with societal breakdown, and full panic to own something tangible - you could see $500+ in silver.

Here's that commodity chart:

http://historysquared.com/2012/04/20/long-term-commodity-price-charts/