Undercutting

[Shibi]

Is this behaviour 'normal' or 'acceptable' in FFXIV?

Sure. Some people will get annoyed, but it's a standard market economy so meh. 1 gil undercutting btw is what makes them lose their hair, but this can also lessen your profits.

What I find is if the item sells a big quantity and it's early in the expansion undercutting isn't the best way to sell just list it at a good price and let the bottom feeding people be bought out while you sleep, your items will also be sold at the higher price in the morning. More profit, roughly the same time spent.

Use the history button on the MB to see where to price effectively, or use a statistics website that does stuff like this: https://universalis.app/market/36242 to pick one thing randomly showing the 0% price that is selling is 1000-1100 (in the Aether DC at this time) while the cheapest is around 500. See how many are for sale under the 0% mark and decide... will that x many sell while I sleep so mine get bought up? Can I afford to risk doubling my profit while I sleep?