what is the limit to carry electronics like iphone , a laptop and headphone from to india both quantity and money wise
Welcome to TA today.
I'm not sure anyone cares about " quality and money wise"...
Do you have a particular retailer or website in mind, perhaps?
if you are carrying one or two units of phone and a laptop customs are not bothered. keep it in your hand baggage. if you are planning to carry more then you will have trouble with customs, since there is no duty allowance for the visitor.
duty free allowance is only applicable for NRI who stayed out of the country for minimum 6 months.