Try the "Staunion" brand fake Sharpies - worked well for me ;-) . Some fakes can be better than the real thing (There was a fake Syma clone mini-copter I kept buying more of because they were better than the real ones in particular ways).
In countries with poor counterfeit product policing, consumers learn which fakes to buy, or which sellers to trust. Just like buying LSD or Ecstasy :-)
They wear out in 2 or so days.