I was worried about mine because I was having so much trouble getting it to connect to my MQTT broker. It has the diagonal cut corner and purchased from Aliexpress for $2.49 free shipping. I did get it working, though, the connection between my DHT22 shield and the board is a little iffy. I've had to reseat it twice in two days.
BTW: Paul- do you have a shield for your moisture sensors or solder directly to the board?