Of course all those tags are worth money.
… the price that advertisers paid for keywords dropped an average three percent,…
…28 percent drop in Telecom-Wireless products and services from $1.09 to $.79, possibly reflecting the trend to give cell phones as a gift during the holidays. … Consumer-Retail category … decreased … 11 percent
Fathom Online, a leading SEM, tracks keyword prices daily and even hourly to spot trends and to provide its clients advantageous buying opportunities.