The shop assistant says they sell the eggs by ...... dozen.

Our customers would never buy meat by ...... kilo.

The following products can only be bought by ...... ton.

The cloth is sold by ...... length.

Some of the liquids may be purchased by ...... litre.

The new washing powder may also be bought by ...... kilo.

Our salaries are calculated by ...... day.

Many young people, especially teenagers, sit at the computer playing games by ...... hour.

Is it possible to pay by ...... month?

The subcontractor would like to pay by ...... week.

Sometimes we offer special packages by ...... lesson.

The real estate agency is selling the property by ...... metre.

Private teachers are usually paid by ...... hour.

Homer is paid by ...... day.

The salad is on offer by ...... kilo.