Say that it cost Research 2000 about $4 per interview to complete the 52 weekly, State of the Nation polls that it had agreed to provide to Daily Kos, which at the time consisted of 2,400 adult respondents each. Please note that the cost estimates included here are hypothetical. Based on my limited experience in actually commissioning polls, this would have been quite cheap for traditional telephone polling, but we'll run with it for demonstration purposes in the absence of other evidence; it works out to $499,200 over the course of the year. Say also that the 98 state- and district-level polls that Research 2000 had originally agreed to provide to Daily Kos in 2009 cost it $6 per interview; the higher cost reflects the fact that these were polls of likely voters and therefore would have been more expensive to complete, since it takes time to screen the unlikely voters out from your sample. With 600 respondents per local poll, this would have cost Research 2000 an additional $352,800 over the course of the year.
Thus, the total cost of Research 2000's polling in 2009 would have been $852,000 -- $499,200 for the national poll, and $352,800 for the local polls. Suppose that 40 percent of the fees that Daily Kos owed Research 2000 for this polling were due with the third and final payment -- this would have been $340,800.
In exchange for receiving this $340,800 a few months earlier than it otherwise would have, Research 2000 was willing to conduct 59 additional polls for Daily Kos. The cost of these polls, assuming they were 600-person state and local polls conducted at a cost of $6 per interview, would have been $212,400.