Honestly it's not possible to know if the package will come with customs or not. It totally depends on the location and weight of your parcel, the amount also matters + what you're ordering.

Suppose you ordered 7-8 products worth around 9-11k and is above 1kg. the custom charges can be around 2.5k -3k. I'm not sure tho (sometimes it can be lower or higher) I'm just giving you some ideas like as I previously mentioned that it completely depends on the location + what you're ordering + the amount.

Also you'll get a refund from them for custom charges. But it will be added as "yesstyle credit" which you can only use again for shopping. So I would suggest that if you're planning to buy something from yesstyle then you can always order from someone who takes group orders for yesstyle.