Just checked, and hive has dropped the price by £10. 
https://www.amazon.co.uk/dp/B01B5P5Y6S/
Since the echo plus and smartthings use the same zigbee profile, I’ve been hoping that we would start to see more devices available.
@orangebucket started a thread in July 2018 on the Salas SP 600 zigbee pocket socket which looks to be a similar price to the hive, but is physically a bit smaller:
https://www.amazon.co.uk/SALUS-Controls-SP600-Smart-White/dp/B0743CTGJ6/