I buy silver at spot locally all day long, I never pay anything over spot. Come to my town and I will introduce you to my vendors.
If thats true, open up your own shop immediately if not sooner and buy from them to resell. The US Mint doesn't even get silver at spot price. Spot price is the theoretical minimum price of the value of silver based on paper IOUs being traded back and forth on stock exchanges, it doesn't begin to consider minting costs, shipping, taxes, business overhead, etc.
If you are serious and they are willing to ship metals to me, I'd be more than happy to buy massive quantities from them.
I'm contacting my guys now to see what can be done. I'll get back to you shortly.