The only popular titles they have there are One Piece, Naruto, Bleach, and Detective Conan (under the excreable "Case Closed" title with Americanized names).
Still, at least the prices are reasonable ($4.99 for most volumes - a few, mainly short series with only enough for a single volume, are $9.99) and it looks like you can download them to Kobo's e-ink devices (though I wouldn't want to try and read 'em on a Mini; dunno if there's versions you can download to *any* ereader, though).
Might pick up "Sandland", personally. It's a good story and the only Akira Toriyama property they have in there. (no Dragon Ball or Dr. Slump
