IlikepensandicannotlieI got a M1000 for a cheaper price from cultpens.com thanks to Boris Johnson and the weaker pound. Also they're on sale right now for a bit too. A much better deal than this.
You may not be able to get a limited edition version, but the M1000 writes so differently from the M800. Despite the difference in size and carat difference between the M600 and M800, the increase in quality between the M1000 and M800 is much greater imo.