...
Your pictured chairs are not from Hans J. Wegner, the original looks like this:

Among
many other differences, note that Wegner keeps his legs on the same spatial "cone" so that from any angle the legs all point to the same imaginary point in space, far above the floor. No awkward "baby doe" gawkiness for Hans !

.

Similar to a Wegner variation
Although still not quite right, these chairs are fairly similar to a variation of the heart chair designed by Wegner.
http://www.fritzhansen.com/en/fritz-hansen/the-republic/History

What a beautiful chair
I love it! Hans Wegner was such a brilliant designer.

.

With respect, I'd say that
they are NOT "good replicas" -- which would be the best reason not to spend even one-sixth of what the seller is asking . . . !
I don't often say such a thing, but I'd call these chairs "A slap in the face of Hans Wegner" . . .