Hi Chennai gal,
Well I found Ketostix in Calcutta so I guess they should definitely be available in Chennai. But I must warn you, these strips are notoriously succeptible to humidity and if I know about Chennai atall, I know that humidity is pretty much a constant. So, I suggest you dont worry about the stix much, just get down to LCing, be strict and firm with yourself (discipline, discipline!!!) and try to work some exercise into your daily routine.
All the best.
Anu