Under NO circumstances whatsoever carry out any buy back transactions on foreign currency exchange at the Post Office. Their buy back rate is nothing short of scandalous and a total rip off. They have the worse rates going - even Debenhams is better! On 500 euros, I only received £370 and did not realise until the transaction had gone through. Eventually, I got through to the customer services at the Post Office who took up my complaint but everyone else I spoke with were not interested and tried to fob me off, telling me there was nothing they could do. To give an example, I bought the Euros for £0.84 but had to pay £1.35 to exchange them into Sterling. Scandalous, absolutely scandalous. I feel as if I have been mugged. Modern day highway robbery. Beware.