Well, just want to share some of my personal experience when surveying for car tint.
1. Don't bother so much wheater your car would remain 'cool' after parking long hours under the sun.
Because your car is an 'closed room' which has the tendency to trap heat. Unless your car tint can block 100% of the light (which is also the heat).
2. TSER is a better prediction of heat rejection/reflection.
Though I found out, when test using heat reading meter, different brand with same TSER doesn't perform the same. In fact, the difference is huge.
So don't believe the brochure/ website info blindly, even it's an official website. Go test it out on your own at respective authorised dealers.
3. To get cheaper price, you MUST shop on your own.
Meaning you need to call/ text/ visit Facebook page/ WALK-IN to negotiate for best price with authorised dealers on your own.
And please insist that no one refer you there. So they save up some referral fee, you save up your own money.
This is my real experience when I wanted to tint my new Almera Klang Valley. I'm referring to one same brand and exactly the same product series.
All prices are quoted from authorised dealers listed on official website.
a) Car sales person bring me to the tinting shop next to him. Tell the car tint person in charge to give me RM500 discount. So the last price was RM3300.
b) I check with one forum friend. He did his car RM2850, but he is not in Klang Valley.
c) One person refer me to another branch, RM2800.
d) I call up on my own, RM2600 in Klang Valley. And that branch happens to be the nearest branch to my house.
4. If you are going for genuine product, please make sure the product name offered to you is listed on official website.
I came accross an authorised dealer offering me a product which cannot be found on official website. And they eventually admit that that's other brand product.
Just beware la.
That's all my sharing.