Wouldn't refuse one if you gave it to me, but just a tad over-designed in the body, too much roundy bits, if you know what I mean.
I agree about the seats I have these in blue on my old SLK.
As you state by mileage or years what ever comes first. Personally I do mine yearly in this situation, you will have to make an assessment of the seller and the car but I wouldn't let it put me off, if the car and the seller are genuine.
Dave you need to sort out your photo skills, whilst I think your dog is very nice it really doesn't have anything to do with what your talking about, unless your dog is black and its name is badge.
Is that not a standard OEM lip? Do you not have one on already? I do have a spare one but be aware they are all covered in tape except that the Oem is fitted with two bolts, These have already been pre-drilled and should be on your boot.
Give us a pm if your interested.