Actually, you don't have to. You can pick a free plan and link up to 4 EDB files (2 free + 2 paid). It will help you to share your unique vision and EDB creating style with other users. But let's do some maths: one day, eventually more and more users will love and download your EDBs and they obviously would like to download more EDBs made by you, but with a free plan you will only have 4 EDBs to offer. With Basic, Pro, and Premium plans you can extend the number of your EDB files on GetEdb, upload paid EDBs and potentially earn money and also get some extra perks from GetEdb that would help you to sell your EDBs.