Thank you for this – worked like a charm, have converted three pre-paid gift cards to Amazon credits. The one my Mum bought me for my birthday had a high premium (£50 value and £54 to buy!) – and loads of rules that they hope you don’t read – including a £2 per month admin charge after month 9. What a huge rip off.
Anyway all converted to Amazon credit that will get used long before it expires with no charges. Thanks again.