For what it's worth, Seattle paid $140 million (including $20 million to the Mets) for five years of Robinson Cano, who posted 20.7 fWAR, valued at $163.7 million, with the Mariners.
In the trade of Cano, the Mariners took on the $26 million remaining on Jay Bruce's contract and the $8.5 million remaining on the contract of Anthony Swarzak.
Seattle also gave up Edwin Diaz who, according to one website, has a current surplus value of $13.4 million:
https://www.baseballtradevalues.com/trade-simulator/
In return, the Mariners received two current Top 100 prospects: Jarred Kelenic, now with a surplus value of $64.8 million, and Justin Dunn, now with a surplus value of $16.6 million.