Thank you!
To publish your art in NFT Showroom, you have to be a verified artist first, and then you only pay 5 SWAP.HIVE when you want to mint or tokenize, and an extra SWAP.HIVE for every additional edition.
For example: if you are tokenizing a 1/1 NFT, you only pat 5 SWAP.HIVE, but if you are tokenizing 10 editions of the same NFT, you would have to pay 14 SWAP.HIVE in total (5+9).
I understand, thanks!