Yum .hdr files massive

[Phil Anderson]

Hi,

Is there any reason why the yum header files (.hdr) are about the same 
size as the RPM files?

e.g.
[pza at hallucination development]$ ll headers/thunderbird-0.8.0-4.i386.hdr 
packages/thunderbird-0.8.0-4.i386.rpm
-rw-r--r--  1 root root 11108767 Oct  9 03:27 
headers/thunderbird-0.8.0-4.i386.hdr
-rw-r--r--  1 root root 11109047 Oct  9 03:27 
packages/thunderbird-0.8.0-4.i386.rpm
[pza at hallucination development]$ du -s *
412296  headers
412320  packages
940     primary.xml.gz
6844    primary.xml.gz.0de5a02528ed14facfc0eaf9c7060209.pickle
8       repomd.xml

I thought the idea of the header files was to get all the important info 
from without downloading the whole rpm?

Anyone know what is going on here?  Keeping up with the development 
repositlry is draining my monthly download quota, as i'm downloading 
twice what is really required.

Phil