Confused: Seocheckout Charging 30% or 0% ?

Confused: Seocheckout Charging 30% or 0% ?

Hello
I read many threads where sellers are angry that Seocheckout is charging 30% 
However when payment is made directly to paypal from buyers - how can they charge anything? I don't think those payments are added to the balance as they are already credited to Paypal. 

On the other side: 
If Seocheckout charges 30% , then we should also have the option to use Free Boosts as well. ( I had over 300+ free boosts which I used wisely so that I can use them for a long time. Now all are gone!)
Because paying Seocheckout 30% + buying Paid boost + most sellers use Category featured boosts option - all these together make a high investment.