I can’t begrudge a slight undercut by a few gil especially if they’re selling a single item or say a smaller stack of crafting mats. What floors me is when most everyone is pricing a more desired crafting material around similar prices, one or two gil off, and then someone comes along and lowers it by say 1000 gil or more. You’ll think mine will definitely sell but then everyone lowers theirs as well. If it’s a popular material or item it’s going to sell regardless just base it with the others. It’ll sell. Fast cash isn’t always best cash.