I waited for a year one time
It really depends on the artist. There are a lot of factors that go into "clearance time", so a month+ could simply be normal for that person to create the work.
It's just surprising. I've been abused for that matter, they told me I should have the work done by 6 hours, or less. And now, you are telling me month I'd okay. I am a very patient someone, so I won't make a fuss about it, but there are people that are willing to literally kill for their money...