If there are 50 pieces, 1 piece is 3.45 AZN + 0.20 AZN (if printing on the second side)
If there are 100 pieces, 1 piece is 3.30 AZN + 0.18 AZN (if printing on the second side)
If there are 300 pieces, 1 piece is 3.25 AZN + 0.17 AZN (if printing on the second side)
If there are 500 pieces, 1 piece is 3.20 AZN + 0.16 AZN (if printing on the second side)
If there are 1000 pieces, 1 piece is 3.15 AZN + 0.15 AZN (if printing on the second side)
If there are 3000 pieces, 1 piece is 3.10 AZN + 0.14 AZN (if printing on the second side)

Note: the ink of the pens is blue.