I have heard these ones ride kind weird having springs on all 3 points rather than a hairpin or hinge in front as a pivot point and two springs in the back. Still a cool seat though.
Sorry for taking so long to answer, I actually got it for 60. While I don't insult people with low ball offers (unless they really really deserve it) as a matter of principle you should always attempt to bargain as much as possible.
Peace Y'all