ebay School Safety Patrol Badges prices

It seems the sellers on ebay have mentally short circuited. At any one time you can find badges made in the 90's selling for hundreds of dollars, Apparently all these sellers do is look at some badges and see some are selling for a lot of money and think their 1980's , Made-in-China School safety Patrol badge is worth a fortune not bothering to see the ones selling for $200 is from 1920 and very rare. To them EVERY badge is rare and from "an Estate Sale"! 

One seller had a very common badge "Buy-it-Now for $400, it's crazy. I don't know if it's a sleazy seller hoping to sucker some unknowing buyer or just pure ignorance on their part. Bottom line, do your research. I can't stress this enough, LOOK ON THE BACK of the badge, the complete history is right there. Be cautious of badges that do not have a picture of the back.