Finder's Keepers (New Reality Series, Book Five) by Lacey Thorn

Tomorrow the auctions will take place. Some women become brides, and some become nothing more than belongings who must do as they are told. Winter will have none of it. Taking the first chance of her life, she risks it all to escape, running into the desert and hoping to find something better.

When Roar, Scar, Gate, Shadow and Blade find Winter, they only plan to take her back to the safety of the settlement. But Winter isn’t going back. One way or another she will convince them there is no other option than to keep her.