How long would it take to make one of these with my mom's old sewing machine?

Speaking of Anthropologie, I've been lusting after this $198 duvet cover for several weeks now:




Isn't it DIVINE?? Really any of the bedding on Anthropologie would be greedily accepted by yours truly, but I am blocked once again by Anthropologie's high prices. Sigh. Another duvet cover that I cry over at night is at Urban Outfitters:



Soo fluffy and luxurious, it makes me want to leap into bed and never, ever leave. I'm about one unexpected paycheck increase away from paying the $148 for a queen size cover. Urban Outfitters' bedding, like Anthropologie, has that effect on me.