Daytime anime does not work the same as night time. DVD sales for daytime Jump anime are very low, almost non-existent. Even One Piece does not sell that well. Movies sell well, at least for a few series. Special collections, like the One Piece Log Collections, also sell well. Bleach sold respectably well by Jump standards. Those are low standards, and probably would not have been a major factor in deciding to end the anime. Kuroko and JoJo's were the best selling Jump anime of the last couple of years. Blu-ray usually outsell DVD, and most Jump anime are still not available on blu-ray, except for movies. New episodes of One Piece will not start coming out on blu-ray until 2014.
Anime BD and DVD's are expensive collectibles. BD's start at ¥5000 (about $50 American) for 2 - 4 episodes. DVD's are a little more reasonable, starting at around ¥3000, for 2 - 4 episodes. Sales per volume are always pretty low, even for the most popular series. It's a collectors market, with a small consumer base willing to pay premium prices. Sales alone are not a good way to determine anime popularity. It's usually obvious what's popular, without ever seeing sales figures. Think of it like American TV. I don't think anyone really needs to see DVD/BD sales or ratings to name the most popular shows. The same goes for anime. TV ratings are probably even less significant than sales. Honestly, I have no idea how anime make money, or how profitable they actually are.
Anime News Network posts DVD and BD sales every week, taken from Oricon. Here is this weeks
blu-ray and
DVD charts. BD sales are more important. DVD sales are always lower. Bleach episodes have never been released on blu-ray. Neither have One Piece, Toriko, Gintama, or Hunter x Hunter. Kuroko was a bestseller, so was JoJo's.
---------- Post added at 01:39 AM ---------- Previous post was at 01:36 AM ----------
Merchandise sales are meaningless. They also are sold to a relatively limited number of customers. The average person in Japan would not be caught dead with figurines (no offense to ant collectors reading). Merchandise is for otaku. The existence of merchandise is important. The more popular the anime, the more crap they're going to make. How well it sells is besides the point. They are marketed towards a limited market.