As said these bikes are not your size also they all are fairly low end and look like they need some work. You should be looking for something a little nicer in 56/58cm frame. You will likely end up spending a little more in the short run but spending $50-100 more and get a slightly nicer bike in your size will be cheaper in the long run. Buying a bike that is not your size to try and get a bargain just isn't really a bargain.