Writing Feedback / IELTS task 2 correction. The topic is about "cheap products" [5]

There are too many examples. In fact, examples are just reasons, not thesis , which made your essay lack of arguement and authenticity.

One the other hand or on the other side. I don't think there is any phrase called "on one hand".

Anyway, you should use benefits or advantages instead of merits. Drawbacks and disadvantage as well.

Good luck with your IELTS !