Well i dunno, my best mate has a pair of sais and you can still buy katanas, axes and stuff in shops. What i know is illegal is flipknives, throwing knives and stars!!!, and blowguns and crossbows. When i went to thailand in july i bought a heap of weapons, coz there all so cheap!!! Anyway in customs i got the throwing stars and the flipknife taken away, but i still got batons, an axe, a couple of tactical knives, a display katana and caltrops in. Caltrops are what ninjas use, you throw them on the ground then run and when your enemy walks on them they get blades shoved in there foot. But after my 6 year old brother accidentally stepped on one my mum destroyed them. Yeh so i dunno, can you still buy combat swords???