I do shop a bit on QVC but only when I really want it and more importantly have the money. No buying on Credit Cards etc. Before QVC accepted Visa Electron I used to have to send a cheque, I found that a break between wanting it and actually paying for it really helped stop me buying thing I didn't really want, certainly didn't need and more importantly couldn't really afford.
QVC does have fab bargains, but they are not bargains if you are buying them on credit and racking up debt in intrest payments. I should know as I got myself into severe financial difficulty due to losing my job cause I was ill. No amount of Decleor, Elemis etc is going to matter when you can't sleep cause your stressed.
Even though QVC now does accept my card I still ask to pay by cheque, I usually sleep on it ,then go on line and decide if it is really worth it. If I have the amount of money it is gong to be in my purse I count it out and then either send a cheque or change the payment method online to my card. Or cancel my order. This works for me! Good luck to all of you who are trying to cut down their spending.