Did mine at Sun Hip Ley at Tokwawan. Family shop with long history. $1.6k. But their workmanship is not perfect. Some imperfection and I asked them to re-do and they just fool around with me. So I recommend:
http://prokit.com.hk/
http://www.solarfilm-x.com/
About the same price.
If you want 3M:
http://www.tandtfilmpro.com/
Around +$5k