First of all, thanks for offering me a big discounted review copy. Here is what I get from the OP:
Communication & Support: Very fast response time. This makes me feel the op is really serious about his business. The first version was not what I expect (explain below), but the op offered me a revised version quickly and followed most of my instructions. So I would give 10/10 to his customer support.
Content Quality: To be honest, English is not my first language, but I can see the profession from his work. I personally write homepage copies and order articles for my sites, so I have some experience on evaluating the quality. But if ask me to rate his first delivery, then I would give 7.5/10, not because the content itself, but because the article structure and research depth. When I read the first version of the copy, it made me feel a bit confused. Personally it is not structured with a flawless way. So I replied with my own instruction, then it's better. Secondly, it's the comparison table. I was really unhappy with the first table as it was nothing just listed a few things on it, like product names, product images and price checking link, etc. I told the op how to make a professional and useful table, and he delivered a new table that perfectly makes me happy. Thirdly, it's the product selections. I asked the op to do the research to choose top five products in the niche, and he didn't choose properly. 3 of 5 products have a price lower than $50 while the average price in the niche is about $150~$200. I told him and he replaced these three products with better prices and ratings which are very good recommendations for visitors. So, for the revised version, I would rate 9/10.
Conclusion: when I order articles, I usually give my very detailed writing instructions. Since the op contacted me to offer me a discounted review copy, so I'd like to test his service without asking him to exactly follow my instructions. I believe if he followed my guides then he would definitely have made the work done perfectly at the first time.
So my suggestion is when you order from the op, you'd better give your own instructions and he will definitely satisfy you without doubts.
Recommended!
Best,
Ivan