To be fully translateable and support the plural form this should be:
printf( $this->translate( 'client/html', '%1$d article - %2$s%3$s', '%1$d articles - %2$s%3$s', $this->get( 'miniQuantity', 0 ) ), $this->get( 'miniQuantity', 0 ), $this->number( $this->get( 'miniPriceValue', '0.00' ), $this->get( 'miniPriceCurrency', '' ) );