Cost variable in local repository excludes Red Hat repositories from update

Issue

• Not able to fetch patches from reposync.
• Not able to update from the local repo.
• yum repolist output excludes for cost errors:

# yum repolist -v

Config time: 0.210
Yum Version: 3.2.22
Setting up Package Sacks
excluding for cost: 1:xsri-2.1.0-10.fc6.x86_64 from rhel-5-server-els-rpms
excluding for cost: libcxgb3-static-1.2.2-1.el5.x86_64 from rhel-5-server-els-rpms
excluding for cost: xorg-x11-server-Xvfb-1.1.1-48.76.el5_5.2.x86_64 from rhel-5-server-els-rpms
...