@lupus521 - I'm a co-founder of Magoosh. While I can assure you that all of the reviews/quotes on our website are from real customers, I completely understand any doubt or skepticism you may have. We receive emails from customers on a regular basis, but I struggle with the best way to share these.
On our blog, we've created a post for our customers to write comments about Magoosh in their own words (Magoosh GRE Reviews | Magoosh GRE Blog).
Keith, a recent test-taker and user of Magoosh, recently wrote a guest post about his experience on our blog here (Student New GRE Experience: Keith | Magoosh GRE Blog) though he only used the Math section.
Feel free to PM me if you have any questions about Magoosh. We do also have a 7 day money back refund policy in case you do sign up and decide our program isn't a good fit for you.