So many factors in an estimate for upholstery.
The material's cost is one. Fabric/vinyl/leather? Color? I can't/won't make that decision for the customer!
Redesign? As plain or as fancy as you'd like. That'd be straight 'time'.
The condition of the covers when first brought to the shop. If that's poop, more bench time.
Repairs? Foam, track & frame snags that are not always evident until torn down.
So many times I get asked that same question.
It's like phoning a body-shop, & asking "How much to fix the dent in my vehicle?"
Until I physically see the job to be done, or get a very detailed description, it's hard to say.
If a seat requires reupholstering, there's a good chance that it will need more than just new covers.
At the age these trucks are now, the seats are no longer a 'same-production' item. They've become their own entity unto themselves. They are individual to the truck, as is the truck itself.
I charge $60.00/hr. Average hours...depends on the seat style, and as described above.
It takes almost just as much work to recover 2 as it takes to do one.
If I do one today, & the other 3 months from now, it'll cost about 60% more than if both are done at the same time.
Some upholsterers are faster than others. Some have their own specialties.
Don't take auto stuff to furniture guys. They don't get it!
I'm not super fast. But, I do it once! I HATE taking apart something that I've just sewn. I don't like 'comebacks' because I rushed a job.
I'm fussy! If I wouldn't be happy with it in my own vehicle, why should my customer?
People come to me with ideas of what they want. I tell them what's possible.