Buying used electrical products is not like it used to be. These days, for example, buying on eBay you are covered if the goods are faulty. You can claim a full refund up to 6 months after purchase. Not great for sellers but a big plus for buyers. Ho...
...and get tied into a two-year contract. Not ideal. Better to get a Smarty unlimited data sim at £20 a month which you can cancel at any time. Then purchase a used 3 or EE 5G router on eBay. That is what I have done. The router was £150 which is not...