Should I Heat The Length Of The Cigar Before Smoking It ?

Novotel Siam Square, Bangkok
Apparently not! I’m told this was done in the 19th century to burn off the unpleasant gum used on some cigars made in Seville. Today’s handmade Cuban cigars use a small drop of flavourless, odourless vegetable gum at the cap end of the wrapper leaf.
question
i am living in australia, i will be going to thailand and i wanted to buy a couple of boxes of cigars and take them home, does anybody know if this is legal, is there a limit, are you allowed to do this at all?
a reply would be most appreciated, thanks
adam