Problem with this analysis is that it assumes that richo is the player you would get if you bought someone today.
If you bought a Goodwin (355k) or Pavlich (373k) today, if they score as well, or almost as well as richo, you are going to be better off.
Further, this would leave richo as an option for your next forward upgrade...
Good point, I had shortsightedly forgot about Pav as I have him. I think he represents really great value. Goodwin, not so much. But yes, if you can get in Pav or possibly Lids then that may well work very well. If Richo misses a week (or possibly even if he doesn't) it still leaves you with enough time to downgrade one of Brown/Walker and pick up Richo in 2 games time.