I’ve noticed this user because they frequently comment with a ridiculous lowball and then “buy now” on CS:GO listings. They keep adjusting profile pictures and names, but usually go by uandson santos. Both accounts also appeared in November 2016. It’s pretty obvious the account are the same person probably just trying to take advantage of the promotions.
Main: https://gameflip.com/profile/us-east-1:834b34c4-1933-4fef-8f69-96b4291b969c
Second: https://gameflip.com/profile/us-east-1:6a5a66cc-33fa-44a5-ac3d-eb6edf4d8740