Time is money, and little time = little money. So the impatient will do this and get very little and they complain when the next impatient one undercuts them. So price it higher, try second lowest, you'll be surprised how often that sells very quickly too. So then you can step to 3rd lowest. And before you know it, you really understand what time you like and money you like. If find if I always put things at lowest, I am out of stuff to sell fairly quickly, and I really don't want to fill up 40 slots (20x2retainers) selling 20 gil, or heck 200 gil items. The time spent pricing them and putting them on the board is also overhead, and I am better off farming or crafting some bigger ticket items.
