Are used cars more expensive in Germany than the US?

To some extent; there are a few extra features which might be reserved for top-of-the-range vehicles, but in general most cars will have the basic precautions: safety belts and airbags, ABS and good...

In some scientific fields yes, in others no.

Prices change rapidly but some classic antique cars have sold for many millions

Well see, it all comes down to the fact that they eat more organically than we do. Organic foods & more elaborately prepared food would cost more.

In general most electric products and services are more expensive in the UK than they are in the united states, however, I cannot find a specific price comparison for T Mobile.