Hey, i am from India and i have ordered several products from Massdrop. the customs charges are not included, usually anything around 4K INR is not charged any customs fee. over that you are looking at about 40 to 50 percent charges.
e.g, i ordered smsl m6 dac amp which cost me about 9k INR including shipping and then i had to pay about 4.5k INR for customs. not a bad deal considering the price on indian sites was 25K INR for same product .
i havent received any thing after the GST came in to effect so not sure whether it will increase or decrease the customs charges. there are a few thing on the way from massdrop to me in the next few weeks so i will find out soon.
dont be disheartened by the customs charges, most of the stuff available in massdrop is not available in India and even with the customs charges the final cost tends to be lesser than the cost for same stuff available for import on sites like amazon.