You’re going to find the Xiaomi Aqara devices on Amazon.ca, but for more than you’ll pay from GearBest or Banggood for Aqara and Mijia devices. It’s just that you can get them quickly from Amazon, and it will take between 2 weeks to a month to get them from GearBest or Banggood.
If you are not squeamish about adding a Raspberry Pi or having an old laptop running all the time, you might want to checkout Home Assistant Device Bridge. It's really not hard to get going at all, and once it's setup, you'll be able to just add very inexpensive and small Xiaomi devices with ease. They'll just show up in Hubitat and you'll be able to incorporate them in automations with the same simplicity you could any device directly connected to Hubitat Elevation.
You'll just want to make a small investment in a ConBee 2 Zigbee gateway dongle, but it's so worth the money. If you have many sensors to add, you'll make it back in the savings (assuming you don't buy the Xiaomi devices from Amazon) in adding Xiaomi devices. I previously would have steered clear of recommending Xiaomi devices, but this setup is solid in my house and there's many others that report the exact same. It opens up a lot of other inexpensive devices that are also supported by the ConBee 2. And you can add anything HomeKit wifi compatible too.
Keep in mind, that just because the ConBee 2 has good range and hangs onto the Xiaomi devices like glue, you still need Xiaomi compatible repeaters on that network if you want to pair more than 32 devices directly with the ConBee 2, or your house is large. There's many posts and threads dedicated to the subject of Xiaomi compatible repeaters, but on the low end (yet perfectly functional) we're talking IKEA TrĂĄdfri repeaters and outlets, mid-range is Iman's devices, and on the high end (very powerful), Xbee is the current king of the hill.
