See the pattern here
$3.10 $4.05
$6.50 $11.20
$13.40 $16
$6 $12
$9.60 $12
$3.60 $4.65
$3.05
$2.45 $3.25
$7.30 $8.90
$7.10 $8.40
$8.40
$8.10 $13.10
$12.10
$11.70
$7.50 $9.30
$4.30 $5.60
$2.20 $2.80
$4.10 $6
$2.35 $3.05
$20 $26
$12.30 $16