I think it would be a good idea to show the statistics of what items on the market are selling at similar to what steam does for Cs:go guns they show you the prices items are selling at and it helps alot when trying to calculate the exact worth of the item usually by calculating a exact price range by looking at the last 7 days
Also this gets rid of alot of the problems the item worth thread on the market had where people could mislead anyone by giving a false price range also waiting for someone to answer your post on it is very inconvenient and inconsistent it might take a few days to actually get enough info to correctly find the the items value but I think it will be a welcome improvement

This sounds like an awesome idea. It could be especially helpful to newer players that don't know the prices of items, so if someone controls the market on one item, the player won't get ripped off. +1

I could just hoard as many skull necklaces as i could get, then buy them for 1,000,000 off my alt
would that make them worth 1mil?
bad idea imo, since there's no fee for buying market items

but maybe, they could make a graph, like in steam community market to show the prices that stuff has been sold at previously.

Since the tb commuinty is very small you could but the names of who sold it and who got it or you could simply take those trades out of your calculations because they would be outliers.

Easily solved with this