If you don't mind my asking, how long does an average panel take to draw? I'm not a graphic novel artist, but know it must be a challenge filling a book with stellar art in a time crunch. I know it varries, but on average, how long does it take for the final uncolored ink?
It totally depends what's going on on the whole page.
A page with lots of panels or large elaborate scenes will take longer to plan and draw than a page of, say, 3 panels of just talking heads.
In an absolute pinch, I was producing entire issues (pencils to colour) in about 4-5 weeks, but that is NOT a typical example and my brain REALLY hurt by the time it was done
A more reasonable example would be the Muppet Show I'm drawing right now for Roger. I'm only pencilling and inking this story and it takes me about 3 weeks to do 22 pages. Again, we're on an unexpectedly tight schedule and I have to leave time for the colorist and letterer to do their part.
But ultimately, don't take my examples as typical, as I have a rep for working fast.
Ask Roger or Dave A and they might give you totally different timeframes. Everyone's comfort zone is different.