Hi and welcome. You need to be at least a platinum member before you can list domains for sale. However if you are serious about the industry and want to make money it's a no brainer to arm yourself with all the tools necessary. A lot of people are happy to spend thousands of dollars on new hand registrations that won't sell but won't spend a few dollars to be part of the community *for life* and learn how best to sell and what to sell.
Good luck with your domains.