Well.. a clear glass Chance posy vase would be worth getting!
Incidentally, there's another scarce model on offer: 7422830767 – a 7" (18cm) blue Carré. A black model fetched just over £200 and actually prompted this thread in the first place.
Frank, it's always the unrecognised items that become the bargains - the orange Physchedelic was one such case, of course.