Your explanation is pretty cool since the interest rate is based on the value that is available in the wallet. Although I have seen some wallet retrieval services that collect a fee of 20% flat rate without negotiating on whether the amount on clients wallets can be huge or not.
I think crypto wallet retrieval services need to be flexible and relate with clients in a comprehensive way in case some might want to give their own rate which might still be adjustable. In a case when the wallet recovery procedures are simple and easy, slicing the price can attract more clients since service rate should not be fixed and less affordable.
Not disputing the fact that some service providers indeed charge really high but price compilation is a sure way to build trust for the clients
This estimation to me it's fair enough but what if one just needs a wallet back probably it was used for something in the past and currently does not have any holdings or probably less than a 100$ what would be a subsequent charge for such a service
I think however he the case it should be captured in the analysis
The wallet recovery compilation is to help this community to find suitable services that could help their need. Since their are so many wallet recovery services in this forum but the good ones are hard to find due to inactivity on their threads and not coming online regularly.
There are people that are looking for these services to help them recover lost wallets that might be hard for them to recover due to different reasons like not having the right resources or tools to recover the lost wallet due to incomplete seed phrases or partial forgotten passwords. Any of us can be a victim of lost pass key and that alone can hinder our access to the wallet making it difficult for fund recovery.