Nokogiri检索Ghost span类

Question

我正试图找回this网站的价格。我正在使用nokogiri，这是我的控制器：

class CupsController < ApplicationController

    class Entry
        def initialize(name, info, link, price)
            @name = name
            @info = info
            @link = link
            @price = price

        end
        attr_reader :name
        attr_reader :info
        attr_reader :link
        attr_reader :price
    end

    def cups
        require 'open-uri'
        require 'nokogiri'

        doc = Nokogiri::HTML(open('https://www.nespresso.com/pt/pt/order/capsules'))
        entries = doc.css('article.ProductListElement')
        @entriesArray = []
        entries.each do |entry|
           name = entry.css('.ProductListElement__name').text

           info = entry.css('.ProductListElement__information').text

           link = entry.css('.ProductListElement__link').map { |link| link['href'] }.try(:[], 0)

           price = entry.css('span.ProductListElement__price').text

           @entriesArray << Entry.new(name, info, link, price)
           @name = name
           @info = info
           @link = link
           @price = price
       end 
       render template: 'cups/home'
    end
end

价格的css在此行上，使用检查器“ ProductListElement__price”>€0.44 但是显示其空白的价格。谁能解释为什么？