Average Total Grade Conversion Reward Card Amount A+, A, A- A average $10.00 3.4; 3.5; 3.6; 3.7; 3.8; 3.9; 4.0 out of 4.0 A average $10.00 90 to 100 out of 100 A average $10.00 B+, B, B- B average $5.00 3.0, 3.1, 3.2, 3.3 out of 4.0 B average $5.00 80 to 90 out of 100 B average $5.00