Currency Exchange QOL

Currency exchange would use following:
Button to set current exchange to market price
Removing autosetting price when entering ratio manually
Showing buying price while selling and showing selling price when buying
Add divine, chaos and maybe other currencies shards
Exchange rate should reflect exchange rate in other currencie(e.g. you can sell something for exalts close to worth 1 chaos, but if you sell it directly for chaos, the price is doubled)

You can suggest more, for sure there's a place for more improvements