Our hotel (St Giles Wembley Penang) had a 15% discount for tickets at The Top, which, if you compare with the prices offered by online tour sites, is a bargain.
We bought the basic package, which consists entry to the Rainbow Skywalk, the Observatory Deck and the Skybridge. The published price is RM78 per person, but with the discount, we only paid RM66.30. As for the other attractions, I suggest you do your prior research before committing. Reviews of the Jurassic Dinosaur Park and the Aquarium tended to lean towards target audience of very young children, and ours were way past that age.
After getting your tickets, the first stop will be a room on the 65th floor where you will be treated to a short video highlighting the history of the Komtar building. Once that is over, the screen will pull back to reveal a glorious view of all of Georgetown. Then, the side door will open, and you will find yourself in the Observatory Deck. Two of the highlights of this floor are the glass floor where you can have a vertigo-inducing view of Jalan Magazine below you, and, the heart-pounding Skybridge, where you will wear a harness and lead by an instructor to walk on a designated walkway outside of the building. Yes, outside the building, I kid you not.
When you have settled your nerves after completing that thrill walk, proceed to take the lift up to the very top of Komtar on the 68th floor. The third and final item of your ticket will be the short but no less invigorating Rainbow Skywalk, a curved walkway made entirely of glass. When you are done with that, you can finally settle down and soak in the almost 360 degrees panoramic view of all of Georgetown. If there is one corner which I suggest to pay attention, it will be view of the clan jetties. Seeing all those heritage houses below you, and the platforms of the Tan and Lee jetties will be a rewarding visual experience.