8% you're referring to gold.
The right place for gold discussion is here: http://forum.lowyat.net/topic/2013163/+1420

To answer your question, that's their business strategy, low spread but high price. That's to encourage people who are worried about liquidating their gold bars to buy from them, and in future sell back to them at low spread.

You are in the right place actually. If you can read from page 60 onwards, you should get a pretty much clear picture on silver investment in malaysia.
Some of the forumers here also sells/trade their silver.
SGSKY is selling his 2oz dragon, but is in 5 pieces pack. Dunno whether the offer is still valid or not.