Large HDD purchase advice (urgent)

I have a 14tb MyBook that is displaying worrying signs, and after contacting WD they are willing to RMA the drive, but I'd need to send it to them. I have 7-8tb of vital info on that drive that I need to get off it soon, was about to buy another 14tb drive to use as a backup but I don't have the money free atm.

Anyone know what the cheapest 14-16TB drives are atm? Or have other advice on what to do in my situation? I could get an elements 14tb for about €250, can't seem to find any recertified/reconditioned. Benefit of that is that once my MyBook is RMA'd I'd be able to use that as a permanent backup then.

My location is Ireland, and I'd love to buy the fucker ASAP because I fear this 8-ish month old MyBook is about to fail.