Should we say "Worth it's weight in LSD?"

I got referred a cool link, today, about how much things weigh, and their value. We've all heard of "worth it's weight in gold," but how much does gold really weigh, per dollar? Apparently, not much! If someone offers you a pound of gold, and a pound of fifty dollar bills, you should take the pound of fifty dollar bills. And lend a few to me, for the good advice. O:)