If one needs small bridie 12ga loads certain Walmarts carry light target loads from Winchester and Remington. I even found subsonic trainer Winchester AA loads (7/8oz #8 @980fps) there for $7.87 per box of 25. I bought 12 boxes and wonder if Winchester will honor $2 per box discount they are running now. If they do $5.87 per box is unbeatable considering these are quality shells that even have brass base I haven't seen in years though I have heard Remington target and Federal Gold Medal paper shells also have non-magnetic brass bases.
Unless your local Walmart carries them it's isn't worth the time looking for them because Cabela's has or had special on the Winchester AA target loads at $84.99 per 250 cartridges. Someone mentioned shells with brass bases sadly most shells now use cheaper gold washed metal bases (Cheddite made) and not real brass as they once did.