I mean, ultimately you've got to look at "If I hate these, can I resell them and recoup most (if not all) of my investment?"
Both of the first two examples scream "YES" to me. So go for it. You're not going to find a SUPERAMAZEABALLZ deal in the <$200 range unless you get insanely lucky at a yard sale or something. Because even if someone inherits a house with some crazy expensive speakers in it, they know enough to check Ebay to see what those speakers sell for used.
The days of getting Klipschorns for $50 at a garage sale are long over.