Hello,
I can't help you with economist but Optimus Prep's 180+ hours on demand course has also a risk free 7 days trial account where you can test the course and then decide if you wish to proceed. Please contact our support if you have any questions.
Here are a few features of the course
- 5,500 questions and detailed explanations covering Quantitative, Verbal, and I.R.
– 30 video lessons explaining all concepts from A-Z
– Formulas, lesson notes and transcripts for each lesson
– Create and do as many customized GMAT quizzes as you wish
– 9 full GMAT simulations
– Powerful analytical tools for individual progress tracking
– Study from home on your PC, Mac, iPad or even iPhone
– Technology that constantly analyzes your individual learning level and adapts to it
– Optimize your time and study only your personal weakness areas
– No additional books needed for your entire GMAT prep
– 50 points GMAT score improvement or full refund guarantee
Attachments
File comment: GMAT online course by Optimus Prep

on demand GMAT course.jpg [ 229.36 KiB | Viewed 4099 times ]