HAF NFTs cannot be traded for Hive/HBD tokens.
Eventually the HAF NFTs application will get upgraded to support a marketplace. For now, we'll be running our own marketplace, which will be built from the past experiences I've got in building NFT Marketplaces on Hive(NFTMart :) ). It was the cheaper way to get started until we can fund the development of HAF NFT Marketplace, either ourself, or by paying someone else to do so.
RE: Holozing Development & HAF based NFT app Proposal & New Creature Reveal