most sifus here are into the expensive ready-to-play action figures 
but still Macross is Macross, regardless model kit or not 

1) Depending of which series, there are 1/100 & 1/144 scale kits too. As for Bandai Macross Frontier kits, they are 1/72, but bear in mind Macross Valkyries are smaller than Gundams, hence 1/72 will be about the size of 1/100 standard size Gundams.

2) You can try buying from http://gwing-online.com, they mostly deal online, but they can COD too, and good news for you they are based in Penang.

3) For Bandai 1/72 Macross Frontier kits, they are fully transformable. Their 1/100 kits however can't transform and only available in Fighter mode. Other brands have both transformable and non-transformable. For the transformable types they are parts-former if I'm not mistaken

new 1/60 macross super dimension fortress  ... perfect transformation! 

yup its fully transformable/perfect transformable.

its 1/60 yamato 30th anniversary version with xtra parts. price is around rm350-450 depends on character. u might as well get it lower maybe around rm250-350 for older version without the xtra parts.