Unique will load all your pistol cartridges, and it typically costs less than Longshot. It's not made to deliver the highest possible smoking hot magnum velocities, but it handles the mid range pretty good. Works for reduced loads in rifles, too.
For the least expensive rounds possible consider one of the fast powders like Bullseye, H-38, W231, WST, and Titewad. Only a few grains of these powders are need for plinking rounds in a .38 Spl, for example. That means one pound will load literally thousands of rounds.