I was putting it off, but I finally got on the phone and cancelled Dish. Was greeted by a robot voice who asked what I wanted to do. "Cancel Service" I said. After 18 minutes on hold I finally got a rep. to talk to. I had to tell her a few times why I'm cancelling - "because I don't watch it very much". Then she told me about the early termination fee and it was what I expected. She said that I would get a return shipping box in 7-10 business days, and after that I have 30 days to return the receiver or pay for it, which could be somewhere between $25 and $350. She couldn't be more specific. Besides the early termination fee, I also have to pay $15 for return shipping.
It took about 25 minutes total, which was not as bad as I expected.
When I got off the phone I saw that my receiver was de-activated so I unplugged it. Then I subscribed to the ad-free version of Discovery+. Now watching one of the shows in UHD -- something I was never able to do with Dish.
I feel relieved. I will be saving $63 per month. This is good because my wife had to retire early from her job and is only getting about 20% of her former salary. Even after cancelling Dish, our monthly expenses still exceed our income. Will have to find other expenses to reduce/eliminate and some things to sell.