Someone is only wasting their own time listing things that will never sell so I don't really find it to be such a game destroying problem.
It just has to work once so if there aren't any other copies on the market someone might get desperate. I sold a perfect ruth for 300K when the past 7 was 145K, I'll take the extra 135K points compared to the "right" price of 150K even if some people find it "insulting"
Got another one now too along with some other guys trying to sell around 220. Hoping none sell for a week and that 145K last seven price disappears haha.