Aside fom online auctions (which are a hit-or-miss propositin), the best prices I've found are here: http://www.tulving.com/
It's one of the best known and most reputable sites on the internet.
Free overnight shipping, too.

Gold is $1,581/oz today. When it hits $2,000, it will be up 26.5%. Let's see how long that takes. - De 3/11/2013 - ANSWER: 7 Years, 5 Months