1) How much over spot is a good price for silver and gold?
A good price for a 1 oz silver coin like an American Eagle or Canadian Maple Leaf is 12% over spot, and a good price for a 1 oz silver bar is 6% over spot.
For gold, a good price for a 1 oz gold coin like an American Eagle or Canadian Maple Leaf is 4% over spot, and a good price for a 1 oz gold bar is 2% over spot. The larger premium for silver compared to gold indicates a shortage in the physical silver market.
It's worth noting that you can actually buy silver at spot price in the form of 40% silver Kennedy half dollars (and BELOW spot price if you buy the old 35% silver nickels). I prefer the Kennedy halves as they are so easily recognizable, but below spot has a lot of appeal.
The rest of their opinions on this page are interesting too, but they remind me of one of my favorite quotes:
"It's hard to make predictions, especially about the future"
I'll leave it to you to determine who actually said it, but it sounds like Yogi Berra to me!