I played mann up with a pal, and got these killstreak fabricators. Their outputs are all specialized and we saw that we can sell them. However, I want to buy mvm parts to complete the fabricators, but It'll only keep displaying this message: Trade was empty. This likely means you offered items that were overstocked, or that you can't afford what you attempted to purchase.
I tried doing so with the bot: ScrapNet, Even though I have the right quantity of scrap/ref/recl metal, and still pop-ups this message. Help would be appreciated.
NOTE: Auto complete fabricators won't be a thing as there's not enough parts in order to complete them.