I grabbed a 5m Strip off Amazon last year £30 and its supported via Google Home you change color/speed via Google..."Hey Google make LED, Blue" and Blue it goes 8) https://www.amazon.co.uk/gp/product/B075DZNDZN/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Totally agree, unless you need to change colours/brightness etc via hue this is crazy expensive, I did as you have but in my case all is controlled via smartthing, LED strip plus plugs probably less than £20 for maybe 30m. Yes I can only 'smart control' them to turn them on/off and not change brightness or colour but it meets my needs.
So expensive, I know it's cheap for Hue but my god, I think I paid about this all in for 4 x 5m (60 LED per M) strips with an additional Alexa control box and power supply from AliExpress. Heat for price, but just so over priced as a product I feel.
Cheaper at B&Q if you can find a store with stock and then add on the extension £57