The SwitchBot hub mini is a good device (I have one), but does not support matter. It is smaller than a deck of cards, though.
The new SwitchBot Hub 2 is a little bigger (about 3” square) but is a matter bridge and has a display showing temperature and humidity. It’s not on the same sale, but at least as of this morning there’s a 20% off coupon on the Amazon US page, so $56. It has all the same features of the hub mini, including the IR blaster. I also have one of these, and it worked to bring my curtainbots into Apple home via Matter.
So personally, I’d get the newer model. It does cost more than minihub, so if all you want it for is the IR blaster, minihub might be a better value. But otherwise, I do like the new one better.