I found this interesting - I went to Dish.com in an incongito window and pretended to create an order. I can no longer add the Flex Pack to a new order. It is not advertised on the main page anymore, when you create an order, you only have the AT120, 120+, 200, 250. It used to be that the Flex Pack was all over the place and it was very easy to find. On the Dish vs DirecTV comparison chart, there used to be a line about the lowest base pack and Flex Pack was listed for Dish, and it is no longer there.
It is still clearly showing the Flex Package on the my.dish.com side of the website, but nothing obvious on the Dish.com website if you are signing up for Dish for the first time.