That just seems like a good way to overpay. The reason I don't want Robertson or Bard is because their teams will want "closer" prices but they are not elite, not even close.
Like by K-BB% for relievers with 20+IP they rank 66th (Robertson) and 124th (Bard). That's out of 247 so Bard is closer to average than anything and Robertson is good but not elite.
I think my less "on the radar" targets might include:
Joe Jimenez
Chris Martin
Scott Effross
Joe Mantiply
Matt Bush
Andrew Chafin
Anthony Bass
Matt Strahm
Tyler Kinley
Just looking at the top ~50 in K-BB% this year, on bad teams.