Wisma UOA, KL City

Monday - Friday:
12am - 7:59am: RM3 flat rate
8am - 5:59pm: first hour RM2.50, subsequent hour RM2.50
6pm - 11:59pm: RM3 flat rate

Saturday:
12am - 7:59am: RM3 flat rate
8am - 3:59pm: first hour RM2.50, subsequent hour RM2.50
4pm - 11:59pm: RM3 flat rate

Sunday/Public Holiday: RM3 per entry

Lost ticket: RM50

If you don't mind walking a little to KLCC, their Sunday/Public Holiday RM3 is cheap. Other cheap parking near Petronas tower are open space carpark near Corus Hotel, Jalan Ampang, MNI tower parking with after 5pm RM2 flat rate, open air RM8 next to Avenue K(just across from KLCC)

Noteworthy is Corus hotel weekend rate only RM5, but many times they will show their parking is full :\