Possible Clues:

• Reserves lofty stand for selling literary compositions
• Reserves unlikely to find a place where work's paid for
• Reserves lofty retail outlet
• A station shop
• Maybe caution's unlikely where work's picked up?
• Source of reading material
• Reserves unlikely retail outlet
• Promote everything, including last of stock in kiosk
• Promotion features centrepiece of 'Dickens -- The Complete Works'. Here?
• Volume may not fit into normal shelf, we infer - could display it here