Can someone please tell me why everything is more expensive in CZ?

We all know about the food situation that its cheaper and better quality in Germany. However a lot of things are more expensive. For example I see Zalando is having a sale. Cz Sale is up to 60 percent off and Germany is up to 50 percent + 15 extra. If you work it out then 60 percent is better. OK. But is you find the same clothes on each site they are either equal or CZ is more expensive. Ok I haven't gone through all the stock so maybe some things are cheaper. But in general I look at MyDealz.de and see and offer and I go to the same site but in Cz and its more expensive. Why? Its the same when I go back to the UK. I can find similar things for cheaper.

The Math aint mathing