Don't panic, here's a copy on our youtube channel: http://youtu.be/Je5q9Y4FmZ0
And here a copy of the How it Works vid: http://youtu.be/TF5EoHW8fPA
and the Storage vid: http://youtu.be/8i_HlRSbxFE
and for good measure our Youtube channel is at: http://www.youtube.com/battlesystems
It is very stable, the clips keep everything nice and sturdy. Also, the weight of the terrain means it sits on the game mat without needing to be anchored. Our 'How it Works' video also shows various strength tests.
We are based in the UK but much of our custom comes from abroad. Due to the hefty weight of this product (up to 5 kg including stretch goals and add-ons!) we have been forced to charge some postage. We've kept it as low as we can and are absorbing some of the cost ourselves. You are responsible for any import taxes and duties that may occur at your end. Please note that Australian and New Zealand backers pay higher shipping costs than the rest of the world.
Kickstarter doesn't have a facility for add-ons but there is a work around. Just add up the total of your pledge, including add-ons and pledge that. After the campaign ends we'll send you our BackerKit pledge manager and you can tell us what you want.