my gun club is in the process of switching from lead shot to steel shot.

i still don't know why they are only doing this for the skeet/ trap shooters and not for the outdoor pistol/ long range shooters either.
i'm wondering if anybody knows of a place to buy 8 shot steel in 12 gauge on the cheap. i think i'll be taking a considerable hit in the wallet.
and how about loading my own shells vs. continuing to buy cases?