You can buy the plans for a doll house bed similar to the bed at the bottom of this page online at a cheap price. It's a twin over twin bunk/loft bed with storage shelves or you can just have the loft bed on top and have a playhouse on the bottom portion.
Dollhouse Loft Bunk Bed Furniture Woodworking Plans
Time Remaining: 7d 3h 40m
Buy It Now for only: $24.95
Build a dollhouse loft bed for the little girl in your life similar to this one.
Build this bed yourself and save a lot of money plus you'll have the satisfaction of knowing it's a quality bed sure to last generations to come.