The last time my team tracked our time on pages for Kamikaze it was roughly 80 hours between the 3 of us. So about 27 hours each. That count was done last year, and since then we've gotten a lot faster and found tools that drastically reduce the time. I don't have a full estimate, but I'd say each page takes more like 40 to 50 hours now (depending on complexity, a splash is nothin compared to a 13 panel page).
What takes the most time are the inks, paints and backgrounds. Since Kamikaze is made to look like it's screen captures of animation there's a lot more work involved. Hence, the time it takes to make a page. ^^;;;;;