Tough to say what the ratio is without knowing the material or options.

Probably safe to assume that it will be minimum 2-3X the cost of the same square footage of glass and frame.

+1. Can't say an exact number, but there is a significant premium. Personally I prefer a rectangular transom.... I think that the eyebrows are starting to trend downward in popularity.

Eyebrows are looking dated.

I agree with all the above!

i think i'm getting tired of the eyebrows too. they have their place on some elevations, but i don't think they are called for on my home. one of them would have been on the side of the house over an oval breakfast table, so i thought the eyebrow window and the arch of the table would have looked nice, but not so much so that i want to spend the extra money. the other one was in my master bathroom over a freestanding tub, but I'm certain i don't want it there

2 times more, really!!??

No not 2 x, a minimum of 2 to 3 x !!

+1

They are not cheap.