Welcome to namePros
@MauiMike ...
What type of domains do you have? And are you looking for a high retail return, or for a modest wholesale return?
The answers to that might help somebody better suggest where to list your names.
As most here will tell you, two of the most important things you can do when selling your domains is (1) Have a landing page with a BIN/MakeOffer AND (2) List your domains on AfterNic/Sedo networks with a BIN, so anybody searching for your domain on GoDaddy or on another registrar will be notified that your domain is for sale at $X BIN price.
There are other places you can take your names, be it attempting to spearfish an enduser via outbound marketing, specialized marketplaces (namePros = mainly wholesale... BrandBucket/SquadHelp = mostly retail, though they have their own network of domain sellers who buy wholesale), but for the most part landing pages and afternic is going to be your biggest sales net.
Feel free to send me a DM if you ever have any domain questions.