What type of curtains? Window treatments can be expensive, but there are many affordable options available. Custom drapes and curtains can cost anywhere from $100 to $1,000 or more, depending on the size of the window and the fabric or materials used. Ready-made curtains or drapes can be found for as little as $10 per panel, while top-of-the-line custom treatments can cost $500 or more per window.

It should cost between $50 and $100 to have curtains installed, depending on the size of the window and the type of curtain chosen. Labor costs typically account for most of the expense, so it's generally cheaper to buy curtains that do not require professional installation. However, if you are looking for a custom look or need help choosing the right type of curtain for your window, hiring a professional is recommended.