the poor man's somebody/something

US /ðə pʊr mænz ˈsʌmˌbɑːdi/ˈsʌmˌθɪŋ/
UK /ðə pʊr mænz ˈsʌmˌbɑːdi/ˈsʌmˌθɪŋ/
"the poor man's somebody/something" picture
1.

le truc du pauvre, la version bon marché de

a cheaper or less sophisticated version of something or someone else

:
This instant coffee is the poor man's espresso.
Ce café instantané est l'espresso du pauvre.
He's often called the poor man's Brad Pitt because of his similar looks but lack of fame.
On l'appelle souvent le Brad Pitt du pauvre à cause de sa ressemblance mais de son manque de célébrité.