Thanks, we don’t have one near us. The US shop prices are expensive for 800 lumen. $20US for the bulb and $6US shipping. I could get a 2 pack of DOGAIN zigbee bulbs at Amazon for $24US, but I don’t know if they’d work. I could get those and add another device request if they don’t work, I suppose. I’m starting to get quite a collection.
To answer my own question and help others, I ordered a $10 RGBCW E27 bulb from eBay. It was unbranded, but it seems most of these are eWeLink ZB-CL01 bulbs. It works perfectly with deCONZ. I added it to the wiki.
EDIT: and just arrived from US Amazon, the Seedan Zigbee RGBCW E27 are a little more at $11.50ea, but appear to be these same eWeLink bulbs as above sold and stocked by them in the US (faster delivery).