Belt Sander Reviews
Always dig into the previous buyers experiences by researching through their reviews.
Alternatively you can use a power tool review website, this will save you a lot of time and give you insights in to the belt sander that you may not have picked up on your own.
These sites are normally run by experts who have years in a trade using power tools everyday.
A good example of a good power tool review site is https://toolinspector.com which is run by a former electrician with over 25 years using power tools.
Always check the amount of warranty the belt sander comes with and research the sellers return policy before you commit to buying.