Amazon[0] link below. Equivalent systems also available at Newegg for the same price since someone nitpicked that you need a $15 prime membership to get that Amazon deal.

Shipping might screw you but here’s in stock 32gb kits of name brand RAM from a well known retailer in the US for $280[1].

Edit: same crucial RAM kit is 220GBP in stock at amazon[2]

(0)https://www.amazon.com/BOSGAME-P3-Gigabit-Ethernet-Computer/...

(1)https://www.bhphotovideo.com/c/product/1809983-REG/crucial_c...

(2) https://www.amazon.co.uk/dp/B0CTHXMYL8?tag=pcp0f-21&linkCode...