Few different ones available, but the 10W wireless driver stands out as a good deal. The 30W driver is there for $10, but a bit bulkier. You supply a figure of 8 cable to get power into it. The lights supply the cable put to the light (Small 2 pin black ones).
The older plastic boxes and newer cardboard boxes scanned the same (same item number and barcode).
Also Norffly LED cabinet/wardrobe strip (55cm) for $5 a piece. This might be the real bargain here.
The ZigBee gateway is $10, down from $58. I am using a ZigBee usb controller stuffed into Home Assistant and these just connect without any drama into zigbee2mqtt.
Could be available at other IKEA's, doesn't seem nation wide, but a few of the items are partially on sale on the website, about half price instead of the bigger in store discount.