Checked this out at Amazon.ca, costs $139 with 2 day free shipping for Prime members.
Ratings are low in number (5 reviews, all since August 2019 and 2 ratings) but promising to say the least, scoring 4.8/5, including 4 reviews at 5/5. A single review (scoring 4/5) was because the user was disappointed the device rendered another OBD device plugged in the same time inoperative, but this is true of all OBD devices (according to Haulgauge Support which commented on the rating).
I am concerned as my tow vehicle is a 5th generation 2019 Ram 1500 Sport, and that specific model is not sold in the US (it also has a 22" wheel option). I am going to write the company with my VIN number, and ask them if they believe the Haulgauge will work with my specific truck. If they respond affirmatively, I see no reason not to buy it.