@writeden I do frequently. Some sellers put really cheap items, like parts for the item you want, which come up first in a low-high sort. By sorting high-low, you get the highest priced versions of what you're looking for, but it can be easier to find the lowest price working backwards.
@xaichai You have to let these ghosts know who is boss. Plus it is "frowned upon" for ghosts to actually negatively interact with people. There are consequences for such behavior, and they are not pleasant.