Buy it. This is from Vertical's preview of their upcoming Black Jack release. I know some of you really hate spending money but in this case it's worth it. You get a good 300 pages with each volume and you can probably find it for $15 or less.
Seriously, if you haven't read his stuff you're missing out. This is the guy who practically invented everything you see in manga. That's not even the main reason you should read it, though. The main reason is that it's good.