There is no definitive answer as it depends on a number of factors, such as the size and type of window, the fabric and lining used for the Roman blinds or curtains, and any extras that may be included, such as a pelmet or tie-backs. Generally speaking, though, Roman blinds are likely to be cheaper than curtains.

It depends on the fabric and the size of the window. Generally, Roman blinds are cheaper than curtains, but there are some exceptions. Roman blinds can be made from a variety of fabrics, including sheer and lightweight fabrics that are less expensive than most types of curtains. However, Roman blinds made from heavier or more luxurious fabrics can be more expensive than some types of curtains. Another factor that affects the cost is the size of the window. Curtains typically need to be wider than Roman blinds in order to cover the entire window opening. So if you have a large window, you may need to buy more expensive curtains in order to cover it adequately.