Definitely use it if you're constantly having to send files to the same people outside or even within your company. It will cut back on communication issues and the time it takes for you to get what you need to get started or complete a project. Again, as I am only a user and don't upload files myself, I am not sure if there are limitations on how many files you can upload or file size requirements. But I do know that some of the files I have downloaded are larger, and I only see the asset library growing without any files being deleted. So I think that the amount of storage available is good too.
After a little bit of research, it seems that you have to get a quote to get started using Brandfolder. So there isn't an easy way to find out how much this costs if you're looking to pitch this idea to a higher up. It will take a little bit of digging.
It is also nice to be able to brand your page. If you are a larger organization with multiple branches, the branding assures you that you are in the right place. Review collected by and hosted on G2.com.