Board Thread:General Discussion/@comment-3182180-20171129164704/@comment-4977725-20171201094206

Meanwhile Ripper Expert is rarest Premium Enhancement since it's not available in Auction Season 2-3 in CSOID

So far I know, only 1 player have Ripper Expert. Meanwhile player who have Runebreaker Expert is around 10+, thanks to Megaxus added Runebreaker to Auction Season 3