If there is a Vortex dealer nearby they may have cases which will fit your 8x42 Terra ED. Here is one they sell in the USA for $18.99.
http://www.eagleoptics.com/binocular-accessories/vortex/vortex-viper-42mm-roof-prism-binocular-case
Bob
http://www.eagleoptics.com/binocular-accessories/vortex/vortex-viper-42mm-roof-prism-binocular-case
Bob