I can give you my .02.......I would never go through a site like that. They product good stuff, but its way too expensive. You can get a great side built custom order for what they charge for their top packages, and then, you own it. No one can take it, no continuing costs each month except hosting it.
SEO is also very important, and what looks to be good to the naked eye, many times is built with subpar coding, which affects the ability to properly "on page" SEO the site.