If you have been looking for a way to sell your extra roaches, isopods, walking sticks or Praying Mantis, then check out https://www.invertebrateauction.com.  Invertebrate Auction is free to use and you can buy and sell.  It also comes with a community forum and some other features that can help make it a one stop shop for information, interaction with other invertebrate collectors and for makings some extra money to keep you growing in the hobby.