I tried using : http://kimi.nwwebsites.co.uk/ for checking kimsufi stock.
turns out it's really slow and not as useful b/c
you might be sleeping when you get an email notification.
So I made myself a script to constantly check kimsufi stock live. it uses fetch.js
Simply select region and node id, it will check stock for every 30 seconds. if there is stock, you will be alerted and redirect to purchase page.
I will be adding more features (inc/dec frequency, choose location within region...etc),
but it should suffice for basic use.