附加费

• 阝(earthen mound; village; hamlet)RADICAL
• 付(hand over; deliver)PHONETIC

Attaching something to a place is like handing an object to the neighboring village next door.

• 力(strength; power)RADICAL
• 口(mouth; speech)ASSOCIATIVE

Adding uses strength and words to increase.

• 弗(not; no)PHONETIC
• 貝(shell; currency)RADICAL

Expense is money that you can never keep in your hand no matter how hard you try.