People do not like to camp their retainers and change prices 1000 times in a few hours.

So people get annoyed and just mass undercut. I go the boards a few times a day. if someone undercuts me once I undercut them alittle. They do it again I drop the price 20-25% and usually say screw it and go to sleep for the night.

Having some money and not being tied to the retainer bell is better then wasting 45mins changing prices and making alittle bit more in my opinion.