Hi, I'm making the assumption that the games you need product descriptions for are computer games, if so then I have knowledge in this field and I have also major experience in product descriptions. Please check my portfolio if you would like to see some of this experience.
By my understanding you need 50 product descriptions a week with a grand total of 400 product descriptions to be completed.
I can also assure you that I will be working on the product descriptions, unlike other members on this site who pass on the work to lesser qualified members, which is why they offer such low prices.
With kind regards, Jordan.