The transaction fee always exists regardless of how the money is paid out to your account. We don't charge any money to transfer money to your PayPal account (aka a Payout). All online marketplaces have some sort of transaction fee, so saying we have a 30% payout fee compared to others isn't correct. We have a per transaction fee from the payment processor, but no payout fee.
Transactions fees from payment processors are comprised of a fixed amount (generally 30 cents) + percent amount (generally 2.9%). This means it's to your advantage to charge more for your product. If you sell a 1 dollar product then the 30 cent fixed fee is going to account for 30% (which is huge). If you charge 2 dollars, then the fixed fee is now 15% of it.