Steam staff nor Marketplace.tf staff will ever ask you to purchase from our website in order to not get banned, prove the eligibility of your account, or anything like that. If you have been told otherwise, you are being mislead and scammed.
I'm willing to sell any of my items for keys, refined, or item offers! Feel free to Add me if you have any questions :) Also be sure to check out my backpack.tf profile to check out the other items that I'm selling! https://backpack.tf/profiles/76561198061489334