大家有请外包公司做SNS推广或者GOOGLE排名吗？大侠们帮我看下这个报价和套餐如何？

大家有请外包公司做SNS推广或者GOOGLE排名吗？大侠们帮我看下这个报价和套餐如何？大家都是自己做的SNS推广吗？ 以下是一个外包公司给我的套餐和报价：
1: - On Page Analysis

• Meta Title and Description
• Meta Keywords
• Heading Tags (H1, H2……..H6)
• Content Duplicacy Check
• HTML Code Cleanup & Optimization
• Internal link structuring & optimization
• Robots.txt Creation/Analysis
• Improve your page speed by removing unwanted plugins and minify javascripts and CSS.
• XML Sitemap
• HTML Sitemap
• ROR sitemap
• Content Optimization by LSI
• GEO Site map
• Google Publisher
• Check website loading time
• Server Response Codes
• 404 File Not Found
• Canonical issue
• Crawling Errors
• Check responsive Website or not
• Check The website looks and field according to competitor
• A website full feels latest Google Guidelines
• Google & Bing Webmaster Tools
• Google Analytics
• Google Webmaster Setup

2: - Off Page optimization


• Business listing
• Google plus regular posts
• DMOZ approval (Mandatory)
• High authority presentations like Scribd, Slideshare etc.
• Infographics
• Blogspot and wordpres blogs creation and postings.
• High Authority Article Submission
• Web 2.0 profile creation
• Podcast Submission
• Press Release Submission
• Write Well SEO Structured Content
• Use Social Media Effectively\


3:- Social Media Submission
Facebook
Google+
Twitter
LinkedIn
Pinterest
Stumble Upon
VK.com
Note: - Social Media is the best way to decrease” Alexa Ranking”

4:- Monthly Reporting:-
1:- Monthly Work Report
2: Positive Alexa Ranking Status
3:- Increased Traffic Report
4:- Customer Support:-
1:- Email/ Chat/ Online
2:- 24/7 Live Project Tracking

價格是每個月400美元，一次至少付半年的費用，一年之內保證Alexa排名和流量有大幅提升

貌似米课没有提到ALEXA排名哦。

大家都是自己做的SNS推广吗？还是请的外包公司做的推广？ 有没有靠谱点的外包公司推荐？

我是新手，做B2C的，请无所不能的大侠们给点建议呀，在此感激不尽！！