Kopech was pretty good in 2021 and 2022, was WAY better than Bummer after he left the Sox, and if you stretch, you can say he returned two low level prospects. Hill was about as good as Bummer this year and was way cheaper. Yankees picked him up for nothing after he stunk with the Sox. Banks was solid and very cheap, and returned one low level prospect. The rest of these guys were either always terrible, too old, or were good previously and regressed here, which doesn't give me confidence that Bummer would've bounced back.
Honestly, by looking at what the Sox got for Kopech and Banks, the Braves might've overpaid.