I did a search on UCH and accidentally had the search on "High to Low", Right now there are listings for 3 Upgrade core highs for 1b each,another 30 for 26m each,45 for 9,999,999m each and another 45 for 5m each.
When you have sporadic pricing like that,the average listing price when you register a UCH drops DRAMATICALLY, players can swoop in and buy for cheap.