There are some advantages of verified sellers: secure trade, trading process is protected, the deals are easy and safe, safeguards for all the parties, guidance with documents, helping you on every step of the way, assistance with shipping etc.
First of all, verified sellers get much more features: unlimited listings, 24/7 support, possibilities to upload pictures, videos and other files.
But, despite all these bonuses, the main difference is trust, because people (I mean buyers) trust sellers, which are verified. So, if you are really interested in export/import business, my advice for you is to get verified! As you can see it will be a great help for you to find your new customers and partners.