ST cranks are more plentiful than molecules of air in the atmosphere. Literally. Unfortunately that doesn't seem to be the case where you live which really blows. Square taper bb's are also plentiful online.
You can pickup a square taper crankset around here for cheap, cheap like $10-$60 will get you about a billion set of selections. On the other hand with the blingy blingy octolink/isis garbage you're stuck with expensive "road cranks".
If you're ever thinking of singlespeeding or fixed gearing this stuff, ST is the way to go. So many cranksets to choose from, easy to install, and bb's are cheap (105 level bb for like $25 CAD).