Well Stephane and Sushil,

here's where our company got em from. (We got One Tube, i.e 9 Nos.) each for Rs. 280 (inc. taxes) or so.
Anyway, you contact them and things could get clear...

M/s. Elektronica Sales Corporation,
Hyderabad. (Sorry, I got no snail mail address).
Contact Person: Mr. Koteswara Rao
Phone Numbers: (91)(40)7056313 (susihl, use 040 instead of 40. Its a Hyderabad Number).
Mobile Number: 9849148289

Warm Regards,
Sriharsha.