Hello. I will try to make it quick.
I have been handling Amazon Seller Central Accounts of clients from UK, Australia, Germany, and UAE for around 2 years now. Most of them are returning clients. My services for them include, product hunting, sourcing, listing, ranking, and then providing reports to them e.g ACOS summaries, bleeding rate, and insights on PPC campaigns. I have acquired dedicated tools for my research such as Helium 10, Blackbox, Frankeistein, Href, MOZ and many more. The benefit for you in working with me would be that my hourly rates would be less than UK standard hourly wage. And in order to balance out your concerns, what I can offer you is that if you are not satisfied with my input, then I will waive off all amounts due on you. Hope it sounds reasonable to you. :)
Shall you have any more questions, please feel free to contact me.
Best Regards