Poppers typically come in 2 sizes. Small bottles which are 10ml, and Large bottles at 30ml (approx 1oz), Some brands also use a 15ml.
Each time a bottle is opened, the air and moisture degrades it a little, which gives the impression that small bottles last longer than large bottles.

$14.90 - $19.87
$14.95 - $19.95
$14.95 - $19.95
Original price was: $57.45.Current price is: $45.30.
Original price was: $50.45.Current price is: $45.80.
Original price was: $57.45.Current price is: $52.80.