If you can get the set for free, then by all means do so! If you don't want it, I'll take it off your hands and pay the shipping.
You could get a much more informed answer about the relatively profitability of Goodwin vs. other theologians from armourbearer or Prufrock; but I'll remind you that Packer said that no one, not even Owen, has seen as clearly as Goodwin into Paul's heart. My own impression is that he might well be the most profound and (in a good way) imaginative theologian in the Reformed tradition, and one great strength is that he seems to relate everything he writes to the doctrine of the Trinity, which he sets out with striking force and penetration. At the same time, he is one of the great pastoral theologians: it was Thomas Goodwin who comforted Walter Marshall and gave him the insight necessary to write The Gospel Mystery of Sanctification. If I remember rightly, Dr. Mark Jones considers v.4 of the 12-volume works perhaps the finest single volume of theology ever written. Although he's recently been replaced by Anthony Burgess, for some years Goodwin was Dr. Joel Beeke's favorite theologian. So if all of that doesn't scream, "If you let the opportunity to get his works for free slip you by it will later give you sleepless nights filled with cold sweats and spasms of horror", then nothing does.
and 
to handle that.
Thank you, sir!
