As someone who has filled miles of spirals, I think this is a great idea. Some folks may not care, but most flyers I know do take pride in how the finished rocket looks. It would be nice to see these easily available in the US.
We sell to everyone via our online portal https://www.blackcatrocketry.co.uk/ . We also sell in bulk where if you order more than 5 of an item you qualify for a discount. So feel free to order. We ship everywhere.