Currently, the only way to modify the price of an item listing on Baazaar is to remove the listing, then pay the 0.10 GHST fee to make a new listing.
However, as it is hard to do price discovery at this time, oftentimes when an item is listed with intention of selling soon, even if you make the price of the item less GHST than the last identical item sold for, the item can sit for days or weeks going unsold.
When the intention is to lower the item listing price, people may be dissuaded from removing and re-adding their listings due to the 0.1GHST fee, particularly as GHST-USD value increses.
Similar to what OpenSea does, Baazaar should allow user to lower the price of a listing item unlimited times at no fee, perhaps at a minimum decrease increment of .05. Decreasing the price in an increment smaller of .05 or increasing price by any amount would require removing listing and adding it again to pay the 0.1 GHST listing fee as the system currently works.