I don't know about that, I bought high quality Egyptian cotton sheets from HSN 16 yrs ago and they are still in great shape. I only wish I could find the same to repurchase a second set. (Hard to find color) I've tried several since from other places, some even at a higher thread count, and I have not been impressed. The shopping networks admittedly have some "instant garbage" like any other store . . . but a bit of what they offer may still be worthwhile.
I actually worked for a company who sold on HSN. Same stuff, different designs. The guy who had that account made bank.
I was mostly responding because I like estate sales, well, what I actually like is buying quality used stuff I need, not the part where somebody has to die for me to get it. It's when I see piles upon piles of useless of useless crap in the same packaging that I know the decedent was in infomercial shopper and it pisses me off. For lots of reasons.
And...the best set of sheets I ever owned came from an estate sale. I used them until they were threadbare and DH finally stuck his foot through one. I've never seen anything like them since, but the new Kirkland ones Costco is selling are pretty darned nice.