ᐅ Roof Windows – What Are the Costs?

Hello,
does anyone know approximately how much it costs to install a simple roof window in a plain gable roof? The roof is still bare and will be newly insulated. So the timing is good. But how much should I roughly expect to invest? Just a rough estimate would be great to see if it’s even a feasible option. Any ideas?

850 plus tax. Velux fully installed.

Ah, thanks. Great. So, roughly one thousand is a good benchmark?

It always depends on the size and the effort (replacement?).

Well, so far there’s nothing yet. First, a hole needs to be dug.
Are there actually more than 1000?
I don’t know the size yet. Something standard?

Also consider the subsequent effort. The vapor barrier/vapor retarder must be properly connected, and the cladding (drywall or similar) is labor-intensive...