@Arun Harindran
It depends on the product also . These products are valued at 20$ + actual cost is also 1800 so max custom charges that may come is of roughly around 400-500 bucks .
I got myself one and i was not charged any customs though it may not be the case always . I would not recommend M1 at budget of 1500 also from my person experience , i had a m1 , m3 , nuforce ne7m , cx-180 initially . I was bowled over by m3 and NE7M , was impressed by CX-180 but i felt m1 was high in details but nowhere near a fun sounding IEM.