Price of decorative strip in facing brickwork

Hello everyone, we are currently building a house in S-H and are considering having a decorative band made by the masons in our facing brickwork. It will be about 15-20m. How much would something like this cost extra? Can anyone help here? Thank you very much in advance!!!

Our main contractor from S-H quoted me €55/m back then

I would rate the perceived added value higher than the surcharge.

With us, also S-H, it was €26 per meter net. If you like it, definitely do it, you can't retrofit it and you will regret it for years