I'm never afraid to parrot good content, so allow me to create an easy-to-find place marker for the CDC immunization price list, care of a reminder from Susanne Madden. Here's a sample of the data:
|   Vaccine  |  
     Brandname/ Tradename  |  
     Packaging  |  
     CDC Cost/Dose  |  
  
| DTaP | Tripedia® DAPTACEL®  |  
   10 pack - 1 dose vials 10 pack - 1 dose vials  |  
   $12.65 $13.25  |  
  
|   Private Sector Cost/Dose  |  
     Contract End Date  |  
     Manufacturer  |  
  |
| $21.40 $22.04  |  
   03/31/2008 | Sanofi Pasteur | 
Although the "Private Sector Cost/Dose" is of dubious value, it's at least a start (in other words, if you are consistently paying more than this figure, time to check out one of the immunization buying groups). I also find it useful because I can never remember which brandname goes with which vaccine, I always get them wrong.
 Oh, you can find this chart here.