Sale: expensive or cheap?

A friend recently quoted maxim, "buy China, buy twice"
This translates to "buy a product of poor quality, I throw it, because it does not suit me, I bought the same product in a quality that meets my expectations."
We find in Axis-Net many clients who are in their second "purchase" of the website, but why?
Quick summary of thoughts and steps they are past

    * Everyone has a website, I also want a website ... but cheap!
    * I fall on the first come handyman who offers me a cheap website ...
    * I want to change my site and make it evolve, the builder is gone, I'm stuck.
    * I have already invested (not expensive) and I re-invested (not expensive) from another builder, who at once, I will update my (not expensive)
    * Already six months that my site is online and I have no contact. In fact, except the name of my company "xyz & Associates," we do not find myself in Google. I telephone the builder who said he will take care of that, he said he needs a list of keyword for him to put keywords in the tags of my pages, no wonder ... cheap
    * Another six months and nothing new in terms of contact (note: not surprisingly), I recontacted the handyman. No problem, it will register on sites that allow me to increase my fame and my traffic, and more, he said he has included hidden text that does not see for visitors, but will help my SEO course ... all for cheap.
    * 6 more months, I wish I could manage my news module alone, because right now I'm waiting sometimes 15 days before the handyman I do my updates ... cheap. I also find it annoying that my hosting site does not work well four days per month, especially since I have no mail either over the cuts. Moreover, we can not find my site in Google, even the name of my company. The builder told me that I just buy a software (cheap) that will allow me to put my site up to date, and an FTP (free) to transfer my files. By cons, for SEO, it does not know ...
Review: I've invested Cheap Cheap Cheap, etc.. it ended up making expensive for a site that nobody has ever seen and that does not suit me. I perhaps did not make the bargain I thought.
I contacted an agency that has set up shop (which pays its employees and their charges and who does not work from the bottom of a garage).

    * They take the time to understand my expectations,
    * They advise me on my choice of strategic communication
    * They are studying my competition,
    * They give me proof of their skills in showing me the sites already made and the administration modules allowing me to do my updates
    * They give me evidence regarding SEO by explaining what they have done for other clients
    * They help design the hierarchy of my site and rework all of my texts to optimize SEO,
    * They offer me various models graphics as they have done nothing for me
    * They develop the site in a standards-compliant code,
    * They offer me a monthly fee for a clear and precise work of SEO they perform,
    * They provide me with reports of positioning, I even have a statistical tool easy to use as I go when I want,
    * I put my news update when I want, as well as other pages on the site
    * They m'hébergent on a quality server that only stopped 3 minutes in a year
    * I have a site that suits me, well referenced, practical and beautiful ...
It's more expensive ...
... But I will still continue with them because my site I have gained many customers, so it's profitable, and finally, given the proposed benefit is simply the right price!