U r absolutely right !!!

Better get the words in black and white, or else every entity can change their term and condition from time to time, without prior notices. After few years, really find some claims needed, the SC can change the words simply if no any statement wrote. Then chia lat liao.....

You can try Ultra cool Sg Pinang, Mr. Lee, 04-2817978.
I believed Price big different is depend on your wind screen and rear screen film spec, although 4 doors window film use Llumar Diamond from all the shops. You can inquiry all the details before you decide.

Perai price is more cheaper compare to Penang island price, I did check last 3 months before, but finally tinted in Penang island due to the convenience. Workmanship no comment, it is based on personal quality judgement.