I don't know the exact reason, but I would guess that getting to 100% would be more costly and not really worth it. .9999 fine is the highest we usually ever see. And also, a pure 100% silver coin would be too soft, I think.
Beautiful coin, btw. I'm saving up to do an order of all the dragon coins, big enough to get free shipping.
The shipping was only about $10, so it wasn't too horrible. Better than spending more money than I had planned to get to the limit :)
Yeah, it's not too bad. I'm not rushing any order, just waiting as I see things. I allow myself roughly 1oz per week, so I figure every week I don't buy something locally, that is money towards the "ordering from silver site" pot.
That is cool!