Note that “106 successes per 73 failures” counts only bad failures where you lose an exalt or more. Minor failures costing a recombinator and a +1 fire skills gem amulet can also happen, and you’ll get 73 of those failures too per 106 successes.
A very substantial writeup on how Recombinators work appeared on the Path of Exile subreddit yesterday. Details: https://www.reddit.com/r/pathofexile/comments/v0nm0c/the_complete_guide_to_recombinators/
It’s a long post but you will want to read it – the other people trying to buy the same items as you will have. My video discussing the main parts: