Helmets are available from Rs. 500(local). A branded one starts at Rs.800. When looking for a helmet, you need to check for these three things.
Widely used brands with moderate price are Wrangler, Studds, Vega, Aerostar. Brands such as Bieffe, AGV cost more.
Also check the following links :
Beside this, buy a helmet lock which cost you around Rs. 50 to 100 :)
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