I have bought 20 ounces of silver from these guys on two occasions. The first time I bought 15 of their 1-ounce round or bar "Omnia" product. This was great as you can purchase 1 ounce and get free shipping, or you can buy 15 and get free shipping (may not be available now). Shipping was pretty reasonable, I think I waited a little over 2 weeks for my package to arrive. Customer service was great too.
I haven't ordered recently, but a while back I used these guys. They have WONDERFUL products and a nice staff. Highly recommended.