I don't proclaim to know these international teams very well (other than USA and Dominican Rep) but I did have some success in 06 and 09 tourney (mainly by riding S.Korea and Japan) so hopefully '13 tourney will be a profitable one.
Pool B - Game 1
Aussie vs Taiwan, under 9.5 (-115) *1.15 to win 1
Taiwan has produced a few quality MLB pitchers and their first game will be anchored by Chien-Ming Wang and Kuo. They should be able to limit the Aussie lineup and generally Asian teams play solid fundamental baseball with great defense. Taiwan scored a godly amount of runs in their preliminary games, but that was against countries such as Philippines and New Zealand that barely know how to play the game. Judging by their lack of offense in recent international games, I don't think Taiwan will score enough to push this total over 9.5.
Tournament Future (to win)
USA +280 *0.75 to win 2.1
Dominican Republic +400 *0.5 to win 2
Korea +850 *0.3 to win 2.55
My gut feeling tells me that Japan will not 3x peat and they are sending a much weaker (at least on paper) roster this time around. I am taking the best team from Pool B,C,D and hopefully 1 of them win it all.