This is one of those "Catch 22" questions. Used log splitters are a lot like used cars, I guess. There are some good deals out there but you have to be able to find them. While there are brand name used wood splitters available, there are also "homemade" used log splitters out there, too.
You can most likely guess what I'm about to say about this: Personally, I recommend you stay away from the homemade log splitters. Other than a potential headache and liability, safety could be a concern as well.
There is another used log splitter outlet that I just thought of: Rental stores. Many rental stores will often sell off their wood splitters after just a few years of use in order to make room for newer models. The nice thing about rental stores is that they usually buy higher quality log splitters, such as the durable Iron & Oak log splitters, that can better withstand the abuse of rental service.
Again, if it were me, I think I would stay away from the rental market as well. Even though rental units are usually trusted brand name commercial wood splitters, they have probably experienced a lot of mishandling from indifferent or inexperienced renters - and the damage may not always be apparent, at first.
If I had no other choice than to buy a used log splitter, I'd try to find a recent, one-owner, lightly used wood splitter. The thing about buying used, is you can't ever know how well the log splitter was cared for. You will not get any kind of warranty or guarantee.
With all the being said, if you want to try to find a used deal then take a look on Craigslist or in your local "nickel" or newspaper. This way you will be able to take a nice long look at the wood splitter before you buy it.
Of course, if you would like to price out a brand new log splitter, we can help you find a dependable splitter that will not break the bank. You're welcome to contact us to talk directly with someone from our amazing Customer Service Team or you can brows our growing article library.