The best way to check your eligibility into the top two percentile is by taking a test. Check our home page for details on the next test. The cost of applying for the test is Rupees 600/- (plus payment gateway charges if any) Minimum age to appear for the test is 14 years completed.
Link for registration for the next test on Sep 17th Sunday is http://www.meraevents.com/event/mensa-bangalore-test-17th-september
Once you clear the Mensa Test, you are invited to join Mensa (the local chapter, here in Bangalore). Membership fees are Rupees 1000/- for the first year, Rupees 500/- p.a. for every year thereafter. Alternately, you could also consider a 5 year membership at Rupees 3000/-.
Membership gives you access to all the activities by Mensa Bangalore and select interactions from Mensa India.