If you believe the current stock will vanish over the weekend, cards can be refunded within 3 to 5 days to your bank account usually ...as long as you trust the man to be honest and his ability to proceed such a thing in due time on his side
About RE, in the event you'd be charged by PayPal, it would take you longer to be paid back if a dispute is opened and unable to contact RE so they agree to refund manually sooner. Once on your PayPal balance (you wrote where you're from), no problem to withdraw back to your bank account in a matter of days if you don't have the need to spend again
Extremely awkward that a UK based broker has glitches to enter forms for UK addresses on its website.
To those whose destination country is not covered for delivery by RE, or who encounter other miscellaneous difficulties (address reject), there's a forward shipping company I've used in the past satisfactorily (not the cheapest but works well with extensive options) that has warehouses in mainland China/Hong Kong/Europe that I can recommend. Payment can even be made by Bitcoin. In that case, contact me in PM (not giving it out in the open)
Then China/HK to China/HK/Europe will be guaranteed. There will be to check your own country is taken into account (warehouse specific, whether China/HK/Europe drop collection can lead to different global coverage next), you'll be offered between several private courrier companies / national postal services and economy/express services with different time delays and prices to choose from.
That is your way out if stuck.