You can do CL. A lot of stores will give you some trade-in credit. I used to fund my hobby with selling rcs for fish food and water conditioner. CL will likely get you a bit more money, but it can be hit or miss if people buy from you, and you also have to deal with how you want to meet people. There is a classifieds section here, but it will generally require you to ship. The same to applies to the site aquabid. There is a good thread on here explaining how to ship fish. Some people prefer local sales if they are not comfortable with shipping. There are also quite a few fish or sales groups popping up on FB now too that are local and you could target if you are able to get some viable young gbr raised up. Good luck!
