Geeze maybe he just want to reload shotgun shells and isn't all worried about the cost. You can save money loading shotgun shells just like you save money loading metallic ammo if you don't figure in the cost of the tools and other stuff we're always purchasing, lets face it do we really save money reloading?
I could have purchased a small ammo factory with all the cash I have tied up in to equipment and components, who really needs 20,000 pieces of 40 brass or 1000 pieces of brass for a firearm that gets shot every few years? I know I do.
Anyway OP I load for 12 and 20 gauge shot gun all the way from 7/8 oz trap loads to steel waterfowl with slugs, turkey and buck mix in. What I have found best for slugs, buck and steel is the Mec 600jr. I hand weight the powder, hand seat the wad with a dowel then hand weight the shot charge, I actually load these in a 25 round case block just like rifle rounds. Only thing I use the press for is the crimp function and I would use it for resizing and depriming if I didn't have the Mec case conditioner. I have 4 Mec 650's and 2 Mec 9000's I could load on but I find the 600jr works well for the more hands on stuff like slugs and buck. The other presses are used for trap and some waterfowl loads.