The price indicated refers to the price per centimeter.
To make an order correctly, add the total size of the profiles you want to buy to the cart.
In the notes to the seller, specify the various dimensions.
Example: you want to buy a 30 cm bar and a 70 cm bar. Add to the cart the sum of the two lengths, then 100 units (30 + 70 = 100 cm).
In the notes to the seller, report the following: 1 x 30, 1 x 70