— How to Buy Lezhin Coins with Cheaper Price —

Disclaimer: This method is legal. Many readers from Indonesia use it. I found out from my friend who lives outside Indonesia that this method also works on her. Maybe, it will help you too. The method is buy coins in Korea server not English server.

The reason why coins in Korea server are cheaper than English server is because of currency. So, it's depends on what currency you use or currency in your country, but you can give it a try.
Example:
20 coins in English server: Rp.70.000
25 coins in Korea server: Rp.59.000

Even though they are bought in Korea server, you can use them in English server to buy English chapter. This method will help if you read many comics in Lezhin.

In Lezhin app or site, change language to Korea language.

Menu Settings Language 한국어 (대한민국)

Then pick 코인 충전 (refill coins). Don't buy coins with bonus coins like below unless you have NaverPay account. Choose one without bonus coins, you can check their prices one by one in your currency before buying them.

After purchasing coins, you can use them to read english chapter, just change your language.

Menu 설정 (Settings) 언어 (Language) English (United States)

— TIPS —

Many people ask why they can't find a comic in lezhin app. Probably because it's R-rated comic and they search it in Lezhin app instead of Lezhin plus app. Lezhin app only has PG-rated comics, meanwhile R-rated comics are available in Lezhin plus app.

Lezhin plus app isn't available in playstore, you can download it in link below. https://www.lezhin.com/en/lezhin-plus 

You also can search it manually in browser "[comic's name] lezhin". If you want to search many R-rated comics, searching them in Lezhin plus app is more efficient.

You can ask if you have question. I make this thread because of suggestion by @nahmayste