RM10 for 1 Year and RM20 for 3 years if I not remember wrong. If you are student from KBU can get it for free(I not sure about other colleges).
The One Card can get from the counters and OneUtama.
You can get to centre point by 2 ways.
1)From KJ Station take OneUtama Shuttle Bus, it will stop at CentrePoint Opposite or KBU International College
2) Like mentioned by syther. You can take U89/U43 get to One Utama, hop on the bus from OneUtama to Centre Point.
3)Taxi fare from SS7/26 to CentrePoint would be roughly around RM8-RM10. If you take shortcut via Taman Mayang with smooth traffic sometimes can get to RM6 or RM7. ^^

Source: A year and a halfy frequent traveling to CentrePoint.
Fun Fact: If You walk from KJ to Centre Point? Roughly an hour XD

hi there, the best way and free way to get back from CentrePoint to KJ LRT is also by OneUtama Free Shuttle Bus.
The last bus that passes by Centre Point would be 6.10PM, if u happened to miss the 6.10PM bus u can try rush to 1Tech Park(the building u saw when u turn in from the traffic light, walk there from centrepoint around 5-10minutes) just in time to catch the bus at that station. Alot of people commute back from work by this bus.
Another solution would be get a Taxi ask him to drop u at LRT KJ but ask him go through from Tmn Mayang(highway would be really jam by then never ever ever go by highway). Or u can save more by dropping u at Taman Mayang and walk back to LRT KJ (roughly 10-15minute walk.)