e-GMAT online course review

I purchased e-GMAT online course and went through its quant section. I completed about 75% of the quant course before I tried my hands on Scholaranium (e-GMAT's quizzing platform). I got most of the medium and easy questions correct but I couldn't do the hard and very hard ones. From what I read, to get over the 700 mark, I need to get hard questions correct most of the time and because I struggled with most hard questions I decided to switch to another quant prep course. I am not saying that e-GMAT quant course is bad. I felt like the course assumes that you already know the basic quantitative principles (which I almost completely forgot since high school) and go onto more complicated questions relatively quickly. I believe that many people will find it useful if they are already scoring in the Q45+ range.
Although I didn't finish its quant course, I still think that e-GMAT's verbal course was well worth the time and money. Its course structure was very easy to follow and I like how the course separates the OG questions into sub-sections (e.g. Modifiers, S/V for SC, Strengthen, Weaken for CR). With this structure, you can go through each sub-section and see which ones you struggle with. This will allow you to later target those weaknesses and improve on it. Since I scored 90th percentile on RC in my diagnostic, I didn't focus as much on RC as SC and CR. For CR, I believe that the pre-thinking approach is very helpful since it will allow you to have an answer in mind and all you need is to find it in the answer choices. For SC, the application files and concept files in e-GMAT are very helpful because they contain detailed explanation and they teach you how to approach each question. I finished the SC and CR modules in e-GMAT and improve my skills through scholaranium.