also... i had almost gone for a new trackball assuming that the warranty would have been for one year like most other computer accessories. i had gone to the store with hopes of getting repairs. incidentally, i found the invoice and took it with me. and the guy on the counter said that the trackballs have a three year long warranty so direct replacement. kind of saved 3500 bucks here. though the document provided by logitech states that the device costs 2800 rupees.