If sending $50, the amount that will go to fees is $1.94 and the recipient will receive $48.06. That's 3.88% going to fees, effectively.
* Using Domestic fee rate of 2.89% + $.49 (Goods and Services, Donations)
To receive $50, a payment of $51.99 should be sent. $1.99 will go to fees. That's 3.83% in fees, effectively.