You didn't say if you want to reload one or multiple gauges of shotshells. Unlike rifle and pistol reloading, shotgun presses are not easy to change the dies and other parts to reload different gauges. I think that just about everyone that reloads multiple gauges has a reloader for each gauge.
Single stage reloaders, like the Mecs mentioned above, are the least expensive and are fine for most shotgunners that only reload for hunting.
Fifty years ago when I started shotgun reloading I started with a 12 gauge Bair single stage press. That press is still on my bench for reloading hunting shells. When I got into Trap shooting I bought a Pacific 366 progressive reloader for my 12 gauge competition shooting. Then when I got into Skeet shooting I bought 3 additional Hornady 366 reloaders for my 20 and 28 gauge and .410 bore shooting.
