You are beating a dead horse. This has been a problem with the exchange for a long long time. It has been reported and complained about many many times.
It is best to use the search filters such as Rank, Rarity, specific category such as Personal Equipment>Personal Devices, etc. to get the cheapest prices in the results.
I'm sorry the exchange is broken and hopefully one day it will be fixed.
Someone who sympathizes with
P.S. If it ain't broke, Cryptic will break it. If it's already broken, Cryptic will break it even more. Have a nice day.