QVC's food prices have always been high. And, of course, they have gone up over time, especially recently when things everywhere have either increased in price or shrunk in size.
People are voting with their dollars. If they're selling products, then people are buying and paying the price. You really can't compare the cost of food already prepared to what it would cost for you to prepare. The prices are closer to what you would pay for said item in a restaurant. But, for ME to prepare most items, it actually probably would cost me what they're selling it for since I don't cook that much and gathering all the ingredients fresh would add up.
I don't buy much food on QVC, but for th last few years I have bought the St. Clair sides for Thanksgiving, except the one year when the 4 sides included something with broccoli in it. This year, the 4 sides were $81. Worth it to me to not have to gather all those ingredients and cook them AND fix other things along with preparing the house. It also lowers the stress level. I did think $81 was a bit high until my daughter pointed out the cost of a local place's full Thanksgiving dinner at about twice the price. Of course, that included the meat and dessert, but then I also left two of those sides in the freezer to have later.
Taste is also important and I know I like the St. Clair sides, especially the dressing which tastes pretty much like my own. I have tried Publix and Cracker Barrel's Thanksgiving dinners in the past and I didn't like them.