The price of Silver closed at A$20.60 on Friday. These coins are priced at $476 for a tube of 20 ($23.80 each, $3.20 over spot). When buying by the tube (20 coins) you'd normally pay a $4 premium (or more) per coin. So this is around a 20% discount on the premium. Great price.
Some other deals in their ebay shop (http://stores.ebay.com.au/The-Bullion-Foundry):
10 oz OPM Silver Bars - $212.50 each after discount
10 oz NTR Silver Bars - $212.50 each after discount
1 oz OPM Gold Bars - $1400 after discount
1 oz OPM Silver Rounds - $442 after discount (20 rounds - $22.10 each)
Not affiliated with this company, but have purchased from them in the past.
I write about gold & silver coins on my blog for those interested: http://www.bullionbaron.com/