If you are wanting to try and build a home gym while on a budget, then there are definitely a few options for you. Of course, you won't always find the best home gym equipment when you are looking for cheaper options, but you can still definitely find really good deals nonetheless. The key is knowing exactly where to look and I am going to give you a few options so that you can find the best deals too.
One of the first places that I always look is at garage sales. People who have large gym equipment for sale at a garage sale definitely want to get rid of it. They are usually big and bulky, and they probably never get used by the owner. This is perfect for you since they may be more willing to allow you to haggle the price down on the equipment a bit. Just be sure that you are ready and able to haul away the stuff that day, or they may end up selling it to someone else. So, definitely arrange with a buddy to borrow their truck and maybe even help you move it if you plan on looking for bigger gym equipment pieces like that.
Another fantastic place to look is on Craigslist. it is like a massive classified ads section like you would see in your newspaper. It allows people to list stuff for free, and so you can browse around in the fitness or sporting section and find some great deals on stuff. Just like with garage sales though, you definitely want to make sure that you have a truck on hand ready to go and pick up the item, or they may just sell it to someone else who is ready to go with cash on hand and ready to haul it away.
If you keep your eyes open, then you'll definitely be able to find some solid deals on equipment for your home gym.