PricedinGold.com is the place to click if you're looking for some really creative comparisons.
You might have to elbow Ron Paul fans out of the way to get there, but it has such — ahem — gems as: Yale University tuition, room and board prices in gold for the past 100 years. Its price in 2009? About 56 ounces.
Or, how about this: Gasoline prices in gold are near historic lows!
Have a look, play around with the numbers, and you're certain to come up with a few lines to suit a sales presentation.