Tariffs for translation vary widely, not only in terms of price but also
as far as calculation methods are concerned. The English-speaking world
calculates by word, whereas Switzerland usually applies a tariff per line.
In some cases, the tariff is based on the source text and in others, invoicing
is calculated on the target text. Quoting a tariff by line or by word
alone is an advertising argument which should not inspire confidence,
since this reveals nothing about either the services included or about
the quality of the texts and the customer support, etc.
For further details on calculating the number of lines or words, see