We ordered a scratch and dent and it didn't have a mark on the laptop itself.
Can't say generally, both that I received looked as new but if the description says 'scratch and dent' than it will obviously not be as new and may have blemishes but nothing to effect the performance.
Do these look brand new ?
Twice I've ordered Dell refurb and had to return it now. The first one, twice. Not as bad as Sony, but they really don't test/fix their refurbs properly. On the plus side, I understand that if you keep sending problematic ones back they'll eventually give up and send you a new, possibly better, one.
Are there options to specify ssd?