I've never seen a good deal for a laptop on QVC, but then again, I don't watch QVC.
Actually, I
was at my girlfriend's house the other day and they had QVC on (her mother buys shit from there all the time), and they were selling an overpriced POS laptop. Based on its specs, it seemed to be a laptop from 2009, and they had easy pay set up which amounted to something like $900. I joked that it must be a rerun. Based solely on that, I would not recommend buying a laptop from QVC.
But I would never buy something off the TV again after my first experience, for when I did I apparently signed my new mailing address up for an endless stream of junkmail, and my phone number for a years worth of phone calls from random numbers wanting me to partake in a survey.