get_global_propertiesfunction, and then calculate your total costs given how many times you'll need to run each operation.
get_global_propertiesfunction. Copy the whole list of operation IDs/fees from the return.
get_global_propertiesand the list of operation ID's you find the following transaction fees:
custom_account_authority_create_operation-> Fee = 1PPY & Kb of Data = 1PPY
nft_metadata_create_operation-> Fee = 1PPY & Kb of Data = 1PPY
nft_mint_operation-> Fee = 1PPY & Kb of Data = 1PPY
Remember the 5 "P's"... Proper planning prevents poor performance!