SMARTY Data sim and ZTE MC801A 5G Router - Unlocked - WiFi 6 - White

Hi All,

I see there are lots of unlocked 5G routers available on Ebay for about £80 to £90. Has anyone tried the SMARTY unlimited data SIM in one of these routers? Does it work and is it difficult to setup.

I think the ZTE MC801A 5G Router is the one EE uses on their internet package. Anyone tried the router and the data only sim or has a suggestion as to a alternative router.