購入費

1. Origins, structure, and basic meaning

• Structure: 購入費 is read as こうにゅうひ and is a noun combining 購入 (purchase) and 費 (expense), meaning money budgeted or spent to acquire an item.
• Basic usage: Use 机の購入費 to identify what is bought and 学校が購入費を負担する to identify who bears the expense.

2. Common pitfalls and similar expressions

• Difference from 値段
  • 値段 is the price attached to a product, while 購入費 is an acquisition expense in a budget or account.
• Item and payer
  • In Aの購入費, A is the item acquired; the person or institution paying the cost appears separately as the subject.