Alright. The numbers in the plan is the monthly rental you will have to pay.These plans do not support "unlimited downloading". You can download the GB Equivalent of rs 500, 750, 1000, 1250, 1500 as per your plan.After that which you will be charged Rs 0.20 per MB in plan 1, Rs 0.15 per MB in plan 2 and so on.There is a speed cap in each plan, 2mbps up to a certain GB after that it drops to 256kbps.