I think QVC has serious delusions about who their customer base is for their fashion!
This kind of garment: be it a romper suit, dungarees, boiler suit, onesie, jumpsuit, babygro, Union suit or other one piece garment... belongs on the very young as outerwear... practical considerations such as speed of divesting yourself or requirements for assistance have to be thought of as you get older, sadly. I wouldn't personally want it for lounging at home of as sleepwear... I dare say it is soft and comfy fabric... But I would hesitate paying that sort of money for even a coat.
A younger person, who is size S or XS might buy an equivalent in a budget shop like primark, or one of the budget online outlets, but they wouldn't consider parting with this much for a fad which will draw shudders when they look back on it.