Try local first, no shipping
I'd start with your retailer and go from there. You don't pay shipping from your local plink-n-shoot suppliers. I personally want to move to a plated bullet to reduce lead exposure, but the lead offerings are so cheap I just can't pass them up when a round takes a few minutes each to make, and only milliseconds to expend
That said, I'd look at one of the leading threads in this portion of the forum on reloading economics. I saw a link list in there that was huge. Good place to start. I think there's enough to surf on that topic for a week solid.
Then I'd look on gunbroker.com. They have good deals once in a while if you keep looking. Just like ebay, but for firearms and accessories in case you don't already know about it. Please follow up on this thread, I'm doing the same thing right now. But my new progressive setup I purchased (used) is missing $12 in parts for it's function. RCBS only stuff, have to wait. I'll post some loadings when I get it up and running to share experience with 9mm costs and my rcbs piggyback. Can't find much info on my specific reloader here on the threads either. Hope that means it works fairly well.
jeepmor