Slime is applied once to every tire individually and is guaranteed to seal punctures upto 6mm on the tread area of the tire (not including the shoulder and sidewall). The Slime currently available in Pakistan is ideal for OFF-ROAD vehicles and vehicles that travel below 45mph; we are also currently testing out a new product in Islamabad and for the OVER THE ROAD vehicles (high speed application). Slime is excellent and you will have to use it on your off road vehicle to have faith in it. Slime installed once guarantees a seal for up to 2 years!
As far as the banner is concerned, I am yet unaware of the accessory shop that has placed it. Need to inquire through our resellers in Karachi. If you do see a banner in DHA Phase 2 then they are authorized dealers, definitely. Will reconfirm to be sure.
As far as prices are concerned the cost depends entirely on the tire size of the vehicle.