You'll have to provide a few more clues.

How big is the unit? Do new tracks need to be installed? Is it a basic
low-end steel unit, or a high grade heavily insulated one? Windows?
Thermo-pane?

For comarison, last year I had a single width top of the line Clopay
installed by the orange box store with new tracks but the existing
opener for $650. That included disposal of the old door.

On May 23, 11:47 am, wrote:
Does $1,040 sound like a fair price for replacing an old wooden garage
door with a new sectional double-layer (25 gauge steel + insulation)
door with windows? The existing opener is to be reused. Thanks.