Starter Equipment for Sale in the UK

Hi all, I've come into a bit of financial hardship recently and I need to shift my home server gear sadly. Ideally I'd like to sell it on to someone in the community who's just starting out as I was recently, hence posting here. I've got a HP EliteDesk G3 SFF with 16gb RAM, a 256gb PCIE gen 3 SSD running as an unRAID cache drive, we well as 2 x WD WD40EFZZ Red Plus 4TB NAS drives. The nas drives probably have about 2 weeks total on time, if that, since I bought them new around January - my server has not been powered on since around then since I've not been able to afford upgrading from the unRAID trial. Happy to provide pics and S.M.A.R.T reports if anyone's interested. I would ideally like ~£400 for it but open to offers. UK only please. Thank you. P.S. please excuse the flair.