There is no guarantee for 1st position in the search engines

Be aware of SEO companies that guarantee you a 1st position in the search engines There is no guarantee for this, as no one can control the search engines or the changes made to the algorithms. you can be on top of search engine and next day you may fine you have lost your position in search engine

Don’t trust SEO companies that offer low prices

As you know, no one gives anything for free! and Search Engine Optimization is a long and time consuming process that implies a lot of research and hard work. Always look for Quality links
and Quality come's with more time and more money