here is the complete collection of GRAPPLER BAKI manga, now if somebody can buy it...
ハイスクール！奇面組
http://page12.auctions.yahoo.co.jp/jp/auction/p7609132
the auction is going for around 100 bucks for 70 volumes of Grappler baki (1-49 are the anime seasons 1 & 2, then starts as BAKI that is going through 1-23 (and still going on) and 3 specials, plus BAKI SAGA and another side stories.
if you ask me, they are waiting to finish the complete manga to throw another anime, not to mention that Itagaki keisuke doesnt want to kill the cash cow, in japan right now if you finish your masterpiece series you are forgotten 4-ever, look at akira toriyama, look at nobuhiro watsuki, look at rumiko takahashi (oh wait, not her...)