on 05/02/2021, Andy Burns supposed :
The ebay one I saw (also on amazon) has an integral 'deathdaptor' the inkbird
seems to have a trailing two-gang 13A socket with separate heating/cooling?

It depends on the Inkbird model.

It says 'no reviews' in that Amazon link. The obvious UK regs issue is
the lack of shutters on the 13amp socket.