nothing i can suggest... not sure of bangalore... just find out the local electronics market and go in directly...
Caps - 1 - 15/-
Potentiometers - 10 - 50/-
Strippers - 35/-
Iron - 150/-
As for sensors, prices vary depending upon the student project season. check our website( www.simplelabs.co.in ) for the sensors and let me know if you need anything
I know its a rather late reply 
i've been traveling and couldn't check the forums for some time...
Cheers,
Pracas