It's pretty easy to find cheap garden sheds. Some manufacturers have mass produced garden shed kits and as a result these products are very inexpensive. You can find these kits at your local garden supply store, your local hardware store or from a number of dealers online.
Beware, the cheapest garden sheds are not very durable and will end up needing to be replaced in a few years. All of a sudden those sheds do not seem like a great deal anymore. Check online for reviews of garden shed kits to get an idea of what you are buying. Also, if packaged, remove the pieces and inspect everything before you buy. However, a good quality (albeit cheap) garden shed should last you at least ten years or more.
For the most part these inexpensive garden sheds are made out of metal or press board. Sheds constructed with vinyl clad materials tend to be more expensive. There are drawback with both metal sheds and sheds made from press board or plywood. However, with certain precautions these sheds will work perfectly well.
When constructing your metal shed make sure that you do not bend, crease or make a kink in any of the panels. Any sort of crease in the panels will result in a weak spot in the protective coating and will be the first spots prone to rust. If you do put a slight kink in the panel don't worry too much. However, you must monitor this spot on your shed. If you see that the protective coating is beginning to wear simply apply a clear coat of varnish over the area to provide some back up protection.
When constructing a press board or plywood shed you must also think about sealing it. The easiest way to seal these sheds to paint them. Select a good quality exterior paint and give the shed at least three coats. Make sure that you prime the wood before apply the paint. Ask at your local hardware store for a paint recommendation.
Another excellent way to get a cheap garden shed is to keep your eyes open for second hand sheds. Look through online classified ads for used garden sheds. You will find a few posted at the start of every summer. People are wanted to redesign their backyards and no longer need their sheds. Other people want to upgrade or up size their garden sheds. I have personally seen a number of garden sheds that were posted for free on Craigslist. Faced with the opportunity of a free garden shed you will often to take the shed apart and transport the pieces to your home. Even so, the effort is worth it.
You do not need to spend a lot of money to get a garden shed. There are plenty of inexpensive or, if you are lucky, even free garden sheds on the market these days. If you do your homework and shop around it is pretty easy to find a cheap garden shed.