• These amplifiers are lower in cost ( or cheaper , or less expensive ).
• This machine can do the job at less cost .
• These amplifiers are lower in cost ( or cheaper , or less expensive ).
• This machine can do the job at less cost .
Циммерман М., Веденеева К.. Русско-Английский научно-технический словарь переводчика. Russian-English scientific dictionary for translators. 2012