so the league is great , why are prices on here crashing but they arent crashing in POE ? like ex are still like 80c

Ratio of items vs currency (chaos and ex) aren't changing, but more items and currency are being added to the league which drops the individual prices if that makes sense

not really

Chaos and Exs are being found at the same rate, i.e someone finds an Ex for every 80 chaos found. So in game the trade ratios will stay similar for longer. Here you're trading forum gold for one of those 2 so it's not the same. It seems like items in PoE hold more value in game than out of game.

Tho I could also be totally wrong.

ex and c will remain stable to eachother, nothing to do with these prices in fg

... have you played many leagues?

truth is most of "big" sellers that have like 200-300 ex, mirrors and other stuff in stock are buying from other sites that are super cheap compared to fg value and just resell it here to get more out of it.
most of those sellers doesnt even play the game, they use 0 challenge accounts to trade you, just flipping money.
so they are lowering prices to sell more and faster here which results in crash of price.