Ηρθε και η επιβεβαιωση σε ερωτηση που τους εκανα απο την aramex:
The email was to inform you that the transport charges (postage cost) will be subject to 23 % VAT (ΦΠΑ) from now on as per recently changed tax regulations.
However this does not mean that you excluded from any duty payment by the Customs authorities for importing goods from non-EU countries.
In your example, if you bought the iPhone through you UK Mailbox the transport charges would be subject to 23%VAT surcharge.
If you bought it through your US Mailbox then, the transport charges again would be subject to VAT but you could also be asked to pay import taxes (duty) by customs for the goods imported.
Οπότε όλα καλα