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Prestashop is correct.

We setup Google Analytics and tag manager all the time. 8 hours including client management time is what we expect. Often this is a minor part of an overall online business setup. Like Presashop states, our fees are far higher and would come in close to this person's total cost. However, we get it done correctly and quickly, giving you the confidence you have created an accurate tag management and reporting system.

Yes, there are times when a client brings a "disasters site" one with no plan, various GA accounts, many developers and multiple technical changes.  In these cases we untangle the mess by identifying the additional tasks to make a working solution, then associate a cost with each task so the client is aware of what is being developed, why and how much it costs.

Have an Internet marketing strategy before you develop a website.
Rarely do we see a cost savings when outsourcing to a foreign country.
Always get a total cost estimate.
Any amounts that exceed the accepted proposal must be presented and approved by you.

To me it looks like you have an inexperienced developer and a communications issue. Not enough information to know if s/he is truly taking advantage of your knowledge in this area. That said, the lack of a clear plan by the developer is enough cause for me to recommend changing developers to a team that is local to you.

When searching on Google use:  "Hide personal results" so that you properly mimic what moz picks up.

In moz look to see if your ranking are for an image, local or general serp. There should be an associated icon with your rank position.

Lastly, we have found that Moz rank positions are rarely spot on with Google. They can show general trends - you are on or around this rank, but rankings change frequently and Moz updates weekly. There is bound to be a discrepancy.

Yahoo and Bing positions for us are not even close. These sites are less of a concern, but we consistently find huge variations between MOZ reports and the engines results on the day of the MOZ report run. It is not uncommon to find that the MOZ report simply fails to report anything.

What is your main goal? What issues/consequences are you experiencing that has you considering this change?

We find some themes, even simple landing page themes for wordpress are very poorly coded and can result in slow DL times. Othertimes its the additional plugins, but I think you know this.

My suggestion: If the overhead of WP is the actual cause of your slower speeds, and the sites you are discussing make little use of the features WP offers, then it is certainly worth a try. Generally we can knock out a landing page or micro site using dreamweaver in a few hours.

Dan - Lets leave political commentary to other forums. It doesn't belong here in an SEO forum. I think Parsons is a sexist idiot, but you can find fault with any and every major organization or person. We don't want to turn this valuable area into everyone's place to post info on their personal cause(s).