Train Fares
 Hebbal to Hosur: Rs 10 
Bellandur to Hosur: Rs 10 
Karmelaram (Sarjapur Road) to Hosur: Rs 5
 Bellandur Road to Hebbal: Rs 4
 Bellandur Road to Yeshwanthpur:  Rs 4

It takes Rs 17 to travel from Devanahalli to Hosur. And the bus fare? Rs 50!

 It costs just Rs 4 from Devanahalli to Kodigehalli, a distance of 22km.
 The total ticket from Devanahalli to Hosur is a mere Rs 17 while the bus fare from Devanahalli by ordinary KSRTC/BMTC is around Rs 50. 
 The monthly season tickets are still cheaper ! Rs 115 per month and Rs 315 per quarter from Devanahalli to Yelahanka. Rs 145 monthly and Rs 395 quarterly from Devanahalli to Yeshwantpur/Malleswaram. Rs 160 monthly and Rs 435 quarterly from Devanahalli to Bengaluru City.

http://www.bangaloremirror.com/article/10/20100602201006020533189928df2a868/Take-the-train-it%E2%80%99s-faster.html