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Reloading does not have to be fancy or expensive. You can buy a starter kit for well under $100 if you take your time and only get the essentials.
I have spent hours using a $20 hand reloader and a hammer to reload 20 gauge shotshells.
In the video below, I wanted to show you just how simple a set up you can get away with. In the video you can learn how to deprime shells without reloading tools.
The technique shown works with shotshells as well as rifle and pistol cartridges. As long as the rounds are not berdan primed this technique will work.
It can be adapted to use a large nut, or a hole in a workbench, you can use a nail or a punch, and anything you can strike with can be used as a hammer. Let your needs decide.
However, while you can get away with this, it is much easier to use better tools. I find that while I can reload with simple tools, it takes longer and when I factor in the value of my time, sometimes it is worth it to spend money for tools that let me work more efficiently.
If you have the time and you want a quality product, hand dies are the way to go.
For a step up from the nail-and-socket decapping method,
http://www.lewilsondirect.com/punchandbasesets.aspx
And for a combined decap and neck size hand die,
http://www.lewilsondirect.com/neckdiesanddecappingsets.aspx
And for a bullet seater,
http://www.lewilsondirect.com/bulletseaters.aspx
Benchrest shooters use Wilson dies. If you have good components, hand dies make the best ammo.
For decap, neck size, and bullet seating all you need are these tools, a flat surface, and a small leather mallet. Bullet seating is easier with a small arbor press but it is not necessary. In order to finish the job you will need a way to measure powder and a device to seat primers. Check out the Sinclair International tab on the Brownells web page. I have been using Wilson dies since about 1990 and still use them every week. I am not connected to Sinclair or Brownells, I am just a satisfied customer.