I find that Carole Hochman stuff sold at Costco is lesser quality than that sold elsewhere. I also don't think the items she sells at QVC, are not made as well, the material is not as nice, and the inseams are shorter on the pajamas, than they are at places like Nordstrom and her website.
Example, Regular (not petite) length pajamas sold at QVC have inseams of 29 or 29 1/2 inches. Regular length pajama inseams sold at Nordies and other higher end stores and on her website, have a usual inseam of 31 inches. Also, I think the materials she uses are definitely nicer, and have less shrinkage when washed.