The COINS!!!

It depends on how many you want. There's different packages for them. You can buy 14 coins for $2.99 and 35 coins for $7.99 and so on. Also it takes 3 coins to unlock an episode. There's points too which you get every time you unlock an episode and if you get enough points you get discounts on coin packages. Since its pretty cheap I strongly suggest buying the raw Korean chapters to support the artist.

The price of coins can vary depending on the bundle you buy. Most episodes cost 3 coins to view. In most cases, the more you purchase, the better the deal. Currently there is a Chinese New Years coin sale until the 29th so the prices are reduced a bit more than normal prices I listed below. The Chinese New Years sale has the best prices. Here's the non-sale regular prices:
14 coins for $3.99 (28.50 cents per coin)
35 coins for $9.99 (28.54 cents per coin)
75 coins for $19.99 (26.65 cents per coin)
There's a few larger options but the price per coin is not much different

Lezhin also awards points from by logging on to the KOREAN site daily. You will not be awarded the points from logging onto the English site. About 1000 points are awarded monthly. Points can be used to purchase discounted coin packages. Points discounted bundles:
12 coins for $2.99 (24.91 cents per coin) Uses 100 points
30 coins for $6.99 (23.30 cents per coin) Uses 300 points
73 coins for $14.99 (20.53 cents per coin) Uses 500 points
190 coins for $39.99 (21.04 cents per coin) Uses 1000 points

On the website the only way to pay is by using a credit or debit card. If you download the app from the app store you may be able to use Paypal as well. I also saw on a tumblr post that Lezhin plans to add paypal to the website sometime in the future.

Lezhin also has some ways to earn free coins. Along with awarding points, free coins can be earned by logging onto the Korean site daily. The amount of coins given varies by month (This month 4 are being given out but last month it was 7). If you have an Android phone, download the lezhin plus app here http://www.lezhin.com/en/page/lezhin_plus . This is a different app from the one offered on the app store and you can access the 18+ comics using it.

I meant to also say the plus app awards 10 coins for installing it

Thank you for your reply!!! That was very helpful....
Oh no!!! Must have debit or credit card... HUHUHU.. I don't have one!!!!
I hope there is paypal... cause I will save money for the legal cause I wanna help the author as well..

It has been 4 years I guess that I am reading them for free but is illegal... being a average/normal citizen here in my country is hard and depressing cause everything needs money... cause you know I am from the 3rd world country

thanks for the reply!!! I think it is cheap there... I hope I have a credit card but nah I don't have

I hope other payment methods can be used as well