MP4 Nation has decent service. The customer service (Indian people only lol) reply quickly and don’t seem to screw up. They have a one time instant replacement policy - i.e. if your earphones gives trouble, they ask you to chop it up, send pics of it and they’ll send you a replacement immediately. However if the earphones die a second time, they ask you to send it to Singapore which can be expensive and time consuming as sending it one way takes 20 days and like 1k-ish. Then the replacement they will send back will take another 20 days to come.
Ordering from them is smooth and they really help out by marking almost all of their packages as samples or undervaluing them to 20$ so they can get through our customs for free. It doesn’t always work. So sometimes the item does get stuck in customs and then you’d have to pay up. Express shipping is free but takes 20-30days but it has a very low chance of getting stuck in customs which is nice, while fedex shipping takes around a week to reach your doorstep. But fedex packages have a higher chance of getting stopped at customs, especially in metros like Bangalore.