Went into Ikea Tempe as you do and saw these on sale for $10 (was $40). When I scanned using the app they came out to $4.99 each (not sure if family needed or not).
Picture of stock, about 30-35 units left (3pm 28/10) from a rough count.
When I tried opening the webpage or searching for the product it came up with nil, most likely because they're discontinued stock.
Hope I got the format right, it's my first post :)
These strips draw 3.5W each. Cheapest LED driver is 19W $20: https://www.ikea.com/au/en/p/ansluta-led-driver-with-cord-wh…