They are not exactly advertised as 'New in Box', neither does the £200 price tag reflect absolutely perfect condition either. If it's only cosmetic, who gives a hoot!
The B8 sprint dampers are the same across the Punto mk1 range, so they will fit, and that's where you are making the real saving here money-wise. As for the springs, the 1.2 16V engine might prove a little lightweight at the front end and therefore leave it sitting higher at the front. If this happens to be the case, you can pick up a set of Eibach Pro springs for around £135. £200 + £135 is still a very good price, plus you could sell on the springs too. When I priced the B8s + Eibach Pro set at Balance Motorsport, the bill came to ~£770!