[apothegm]

Most products measured in fluid ounces are actually rounded from ml.

1 floz is close enough to 25ml that so long as a product is produced in 25ml increments you can essentially find it in integer floz increments.

[pacerier]

+1 Cool point, that many are "scams" that don't actually sell what they write.

Yet seems it's still true after ignoring all scams! (eg 19 oz dri-duck, 27 oz siccup, 33 oz eddie-bauer)

[what more, I wonder if that's true too for 0.5 + any floz]