I had been to the 3M showroom before my car was delivered to check the pricing for Sun Film. I was interested in the CS 20 series for the Sun Film. Here are few quotes that I received from various dealers including 3M:
Car Shringar, J. C. Road: 3,400
Add on Accessories, , J. C. Road: 3,600
Infiniti, Richmond circle: 3,400
3M Outlet, HSR Layout: 4,000
I checked the sun films personally at few dealers where the work was being done and found the logo on the film to be little wacky, as in did not look like original. Did the same at 3M shop and it was perfect. Have used 3M sunfilm in my previous car for over 3 years, happy with the performance.
Got the Sunfilm done, CS 20 for my Dzire on 26th Jan for Rs.4,000.
Feedback: Sidhu is the man to be contacted (9740520357). The staff is very polite and courteous, seems they have been through some serious customer orientation program. Infact during my first visit Sidhu thoroughly explained the various sunfilms that they had. As per him the sunfilms are done inside the workshop and in A/C....not sure how that helps, indoor certainly does. He also took me to their workshop which is in the basement to show how under chassis coating was done. Impressed with this service. He confirmed all work was carried out by professionals trained at 3M.
Moment of Truth: This is when reality kicks in. I was ok with the service, not very happy. The guys who carried out the work were in utmost hurry. They were certainly not from 3M and should have been outsourced from J.C.Road. The entire 3M team are found in uniform unlike these 2.....they were like "Kya re phatte" types from J.C.Road. I personally supervised the work that took little over than 1 hour to finish. Had to tell them on few occasions to handle the car properly like pulling the seat in the front or pushing it backwards. Had to point out few bubbles that were left, which were later rectified. Had I not seen it then later would have been difficult to remove those. Sidhu said 2-3% of bubble formation is normal (never mentioned this earlier), the work was done indoors however the area was dusty since there was no complete closure, A/C was there but never switched on, on questioning Sidhu could only smile

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My take is that the place is ok, great customer service, don't expect to be delighted. My comments are strictly for the sunfilms.
The price is definitely high than what you get outside, however peace of mind is guaranteed when you have several fakes around.
I will go back for the under chassis coating (5 yr) later. Not sure if I will get the exterior treatment done from them, I'm more inclined in getting it done through Nirmal.
For the benefit of fellow T-BHPians I'm uploading the brochure in full that details all the services offered with prices. Hope you find it useful. Have cropped few portions of the brochure for better visibility. You will see the prices listed as xxx/xxx/xxx it simply means the price is related to S/M/L (Small, Medium and Large).