evolve,
I have. The problem is that the the spreads between the "bid" and "ask" are so wide that it becomes a losing deal for the person that buys them. Example: a 1 gram gold bar sells for about $75 and only fetches about $49 when you go to sell it back to a dealer. This means your gold has to appreciate by 50% just to break even! When you get to 1 ounce gold bars and 1 ounce silver bars/rounds the spread is only about 5% to 10% between the "bid" and "ask" so you get a much better deal when you need to liquidate. For smaller purchases I recommend 1 oz silver rounds as the best value. We're starting to see 1/2 ounce silver rounds coming to the market but I'm monitoring the spreads closely to see if they would be an attractive alternative at some point. For now, though, silver is under $40 per ounce and it is not too large of an investment for someone who wants to start setting a little aside as they can afford it.
Trader Steve