Thanks guys
well it's good to know that the licence is linked to the cable. I guess I need to find out what the continued support gets you? IE is it technical support if your cable stops working or is it support on how to trouble shoot issues with your car? (if that makes sense).
As for the price, deffo - they seem to hold their value! I looked at 'completed listings' and some people even seemed to have paid more for a used one than a new one!
I also worked out the cost of getting it shipped direct from Ross Tech, and it would appear that the local stockist is more competitive.
Do any of you manage to charge (non-members) for work done, and hence make back some of what you've paid for your cables?

... I recall a few years back I had a MK4 Golf and paid a guy £20 for doing a few things to the car such as: full closure windows, alarm beep, miles to empty on the trip computer, unlock driver's door on one press, all doors on two etc.