Compare pack sizes fairly
Show the price per 100 ml, per kg or per item.
Each example below is the actual published output of the Variation unit price widget for a sample product, Refined linseed oil in 250 ml (£6), 500 ml (£10) and 1000 ml (£16). On a product page the value changes to the size the shopper picks; here it shows the value before a choice.
Quantity taken from the Size attribute and shown per 100 ml: £1.60 – £2.40 / 100 ml before the shopper picks a size.