Well if you are referring to these bulbs. I guess you get it at almost every shop on J.C.road. The light is more whitish and hardly any blue light (although the bulb looks blue) is seen.
The packet costs about 110/- per packet.
It is available at this shop:
J.K.Automobiles (Owner Mr.Satish) = Ph: 08026708210/08026708524 - #17/4, 2nd Cross, J.C.Road, Bangalore - 560002.
I bought 2 packets of this bulb about a month back, I am sure he has enough stock. Check with the owner, he might help you out to get even some rare to find spares (if required).
Best time to visit J.C.road/ J.K.Automobiles would be between 9.45am to 11am.
Mode of payment : Cash/Card
You can also try with Nitin Automobiles, J.C.Road. Nitin has accessories and spares under one roof, J.K. has more spares and is also a distributor for many brands. Last time I visited Nitin he did not accept card.
All the best.