My suggestion is to make it so you can sell item for a set price to the ge without any buyers. For example tridents for 1m, so tridents never go below 1m. They're already at 400-500k. This will be very helpfull to keep prices stable.
Also i have a suggestion for ironmen to be able to sell their extra items (for example extra tridents, kraken tents etc) to a shop for a set amount of coins.