I'd still order one from Caterham/Redline as well.
An alternative is still getting a vinyl overlay over the new badge to make the style change. Alastair member on FB group does those, I can share some examples.
Thats fair. Freight is likely your best option but still likely won't be cheap
Alternatively, @Mark IV you're closer to OP. What would be a quote shipped to if you can get another set CT?
Also just came across this similar alternative
http://www.yourbadges.com/catalog/product_info.php?cPath=33&products_id=243&osCsid=iep55hrjiugjifntd6gnu2da05