"Duel Knight" (学園機士デュエル・ナイツ) series
Duel Knight Sword - (Top left of the image above) 14cm tall. 2010 release, 2,520 Yen (inclusive of tax).
Volks' A3 (Advanced System of Action Arms) Senjutsuki (戦術歩行戦闘機) series
And those are just about the only mecha figures to be seen at Comiket 77. ^^; Plenty of Figmas and Nendoroids on display though.
Images are from Hobby Stock.