BigJim is right on the reloading part. Around here, (Central FL), the Remington - STS, Nitro, and Gun Clubs are the current favorites in 12 and 20, while the Winchester AAHS claim the top spots for 28 and 410.
If you scrounge hulls, use NobelSport or similar primers, clone wads from Claybuster or Downrange and use reclaimed shot - you can reload 12 gauge for about 3.50/box with 1oz loads.....and you can tailor them to your gun in whatever combo works best for you.