See the pattern here
$3.70 $4.20
$3.60 $4.20
$8.40
$7.50 $8.40
$7.40 $8.40
$7.70 $8.90
$9.40
$7.30 $8.40
$8.60
$5.60
$4.85 $5.60
$5 $5.60
$13.40 $16
$15.70 $18.20
$20 $23
$10.70
$4.20
$5.10
$4.65 $5.20
$4.65 $5.60
$3.85