If sending $6, the amount that will go to fees is $0.39 and the recipient will receive $5.61. That's 6.5% going to fees, effectively.
* Using Domestic fee rate of 4.99% + $.09 (Micropayment)
To receive $6, a payment of $6.41 should be sent. $0.41 will go to fees. That's 6.4% in fees, effectively.