Possible Clues:

• Pharmacist
• Vending machine or ATM, at times
• More compact packing is preferable, primarily, for pharmacist
• Vending machine, essentially
• It delivers if I press end roughly
• Writes in red 'Is possibly a vending machine'
• I would back a poet to become a pharmacist
• Girl with poet -- source of drugs?
• Chemist is pounds in red, needing turnover
• I press end roughly for its contents