Postcode interpreted as country name

[chtrading123]

My listing bears the words

"Delivery: Estimated between Fri. 8 Mar and Thu. 21 Mar to "

But the "" is not the name of a country - it is my British postcode, which you may call a zip code. As such it is the start, not the end, of the parcel's journey. What am I doing wrong?

[*vyolla*]

When a buyer views a listing it shows an estimated delivery date to their area.

You're looking at your listing so it's picking up your post code. 

[douglaspuglas]

Can I ask why your listing is in euros?

[chtrading123]

The prompt responses were much appreciated. My post has been edited, which leaves me seeming a bit incoherent. I should have mentioned that I am signed up with the German site. After writing my first post I pursued my researches by using a computer in a public library, ten miles away. I called up ebay.de, entered the search string

"Karte des Schienenpersonen-Verkehrsnetzes Großbritannien"

and clicked on the sole search result. This displayed

"Lieferung: Lieferung zwischen Fr, 8. Mär und Do, 21. Mär nach <postcode> bei heutigem Zahlungseingang"

and the postcode was indeed different. Thanks to *vyolla*'s explanation I now understand why

[fargvs]

 '' ... I am signed up with the German site ...''     << ??

Currently showing as UK registered and UK site Defaults will apply ... may cause problems with differing Import/Export VAT rates and receiving payments in EU site Germany if using a UK account to sell ?.

[rjwilmsi]

If not signed in, the eBay site uses browser geolocation (based on IP address) to guess your postcode and show you postage based on that.

In a private window it tells me a postage estimate for postcode EC4R 0AN (near Monument station in central London), I'm nowhere near but perhaps my internet service provider has some networking kit there.