brokerage (n.)

• admission
• agency
• anchorage
• barter
• carfare
• cellarage
• charge
• dealing
• demand
• dockage
• exaction
• exchange
• fare
• fee
• give-and-take
• hire
• interchange
• merchandising
• pilotage
• portage
• retailing
• salvage
• scot
• shot
• storage
• toll
• towage
• trade
• trading
• trafficking
• wharfage