Because the old system is copy, no transfer I can only upgrade if you catch me online at a convenient time (i.e. not when I'm teaching or otherwise occupied) and I can come and see your system. Once I've seen that, I will happily replace it with the new system.
If you want to buy this new, it is for sale in all the usual places (in my picks), and via XStreetSL and Apez - you can find links at my products index page.