ORIGINAL: metaldonnieg
I personally buy those 100 round bricks from Walmart. They're especially plentiful now as people are starting to drag out the clays. If I'm not mistake the last block of Federal #6 shot for 12g I bought was about $15.50 give or take a few cents.
10 boxes of that would end up being around $155-160, MUCH cheaper than what you paid.
I ordered 250 Remington Nitro Sporting clays, 250 Nitro Handicap, and 500 Estate super sport loads. So kinda, but I ordered A LOT better ammo. I used to shoot that stuff all the time though, it works alright.