You may apply here:
https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/1/

You're not alone in your opinions, but there are multiple theories/reasons why they're raising in price relative to refined and are probably never coming back down to the metal exchange rate you're used to.

There is a megathread for this subject which you can vent your frustrations:
https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/0/828933455924167554/

Sadly, trades cannot be reopened once closed, even if moderators want to. It's best if you just remake it in a new trade.

https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/0/828937545920104555/

I wouldn't count on it. Seems like a pretty obscure indie game and probably isn't on the priority list for the bug fixes.

All of the Halloween items are in the search list, if you're looking for certain qualities such as haunted, there is a dropdown menu for each item.

Trades that are being bumped without stock can be reported, Just make sure they actually have none of the items in their backpack because some people forget to update their trades.

Please take your report here and follow the directions in the pinned topic as a guide:
https://steamhost.cn/steamcommunity_com/groups/tf2outpost/discussions/3/

Be ready to provide proof of this happening, including any possible screenshots of a chat log and anything that proves he did this.

That would still fall under the rules, as they both use common currency items as payment for the keys and could be one trade. An example of different trades with the same purpose for keys would be something like one trade for straight metal, one trade for hats, and another with strange weapons.

No two trades can be made for the same purpose, regardless of when they will be bumped.