Are there any charges for opening a resident individual account, and what payment methods are available? Does BlinkX charge for account opening? 

There are no account opening charges for resident individuals. However, you will have to purchase a subscription plan to access the account. You can make payments via UPI or net banking. No, BlinkX does not charge for opening an account. However, you have to purchase subscription plans starting at ₹249 + GST for 2 months, and you can choose a plan that suits your trading preferences.