In the US they retail under the TMB (TMB100) and Zhumell (Z100) Brands.
- TMB100: http://www.astronomics.com/main/product.asp/catalog_name/Astronomics/category_name/4LTTSBRXCV069JKSSJ74CS9K41/product_id/TMB209
- Zhumell z100: http://www.zhumell.com/eyepiecesfilters/eyepieces/z100-2-inch-eyepieces/
They are not quite as good as the Ethos, but for the price I reckon they're good value for money!
Have a look at some of the reviews here:
Let me know if you're interested
Cheers and thanks!