If you're trying to send me a legit trade offer for my items, here's my trade URL: https://steamcommunity.com/tradeoffer/new/?partner=397260145&token=Inma_86q

If it doesn't work, you then have permission to add me and then text me that my trade URL is busted, I will fix it then unfriend you; otherwise you will be blocked.

I use Marketplace.TF, Scrap.TF. and Backpack.TF trade price averages for my buying and selling prices: yes you can negotiate with me although I have the right to counteroffer or decline your offer.