The listed price is £29.17 (S$52) but they do offer bulk discount if you buy either 4 or 8 units. In my case, I bought 5 of it and hence the price of £26.24 (S$47) each.
I choose the Standard Shipping (6 – 12 days) which is a flat fee of £11.89 (S$22).
The TKB Z-Wave Wall Plug Switch/Meter is probably the cheapest Z-Wave UK wall plug that I can find that measures and report energy consumption.
The reason I got the cheapest Z-Wave wall plug instead of the Aeon Labs Aeotec Z-Wave Smart Switch 6 (Gen5) is because I will be using these plugs in the kitchen.
Kitchen can be oily at times due to cooking. So it doesn’t make sense for me to get an expensive plug only to be coated in oil after that. And the layer of coated oil will eventually be sticky after a few months if you don’t clean it regularly.
Of course this switch is not as nice looking or compact as the Aeon Labs Aeotec Z-Wave Smart Switch 6 (Gen5), but for the price, I am totally cool with it!