The recovery of lost wallet is a very difficult job and that is why many of these services do charge huge amounts of money because their job involves patience and timely calculation of the right tools to use to recover lost funds.
I will not blame any of these services when they charge too high from customers since instead of losing the fund, it is better to recover it with a substantial fee or bid.
Yeah, it's not an easy task, not something that can be done within a day, sometimes it could even take days to crack into an encrypted wallet and if Keychainx could accomplish that then their charge is worth it. Anyways, I had to go check their reviews on
trust pilot out of curiosity and I'm very impressed with the reviews i saw there, out of the 135 reviews the one that got me impressed is a client who got his BTC that was locked on Blockchain.info since 2014 recovered, and according to the client, it was done within minutes, wow.