Firstly, the shop has only been open for 2 days, so it's unlikely you'll get many customers in such a limited amount of time. Secondly, you are competing against the trusted sellers, who may sell for more, but are guaranteed to offer a pleasant experience, as indicated in the price. Members of this site who have been here for a while tend to ignore the cheap shops for a plethora of reasons: a) it brings down the overall income of the site (the site needs income to maintain the servers, so selling for dirt cheap prices encourages people to spam, so no one purchases PC), b) they have been to the trusted sellers for long enough as they know they will get fast and great service and c) people hate undercutting.

In my opinion, you need to establish your shop with a niche that no one else provides, instead of just selling for low prices and hoping for the best. Hope this helped and welcome to the site!