Harpo is talking about is liquidity. The ability for a big buy or sell to effect the market price is a liquidity issue.
Yes, LLL.us is much less liquid than LLL.com. Yes, it's possible for a big buyer to come in and temporarily inflate the
BUYING price of LLL.us. BUT, as in any market with low liquidity, that temporary inflation in market price is not real. Just think about what happens when that big buyer tries to sell at the inflated prices... no deal.
Unless there are a lot of buyers and sellers, small fluctuations in a low liquid marker are mainly an error of focusing too close. These discussions about $5-$15 fluctuations in a low liquid market indicate nothing.
To reiterate, in a small market, the main factor in determining if the market is becoming more or less valid (which will lead to eventual real value) is the liquidity of the market. Are more people entering the market (as new buyers, or previously holders becoming sellers) and is there a steady increase in interest in the market?
Once there is a steady flow of buyers and sellers, market price becomes steady and then we can measure gains. It happened last year... the jump from $30 for LLL.us to $90 happened because more players entered the market.
We should be watching the number of people selling, buying, and actual transactions taking place rather than discussion $5-$10 fluctuations in price. The "slip through the cracks" $70 sale wouldn't happen in a liquid market. There would be just too many people monitoring it.
http://en.wikipedia.org/wiki/Liquidity 
