Not that having a hit in the preschool space is particularly new to "Gabby's Dollhouse" creator Traci Paige Johnson. Back in the '90s, Johnson created "Blue's Clues" (and is the voice of Blue ...

A well-preserved example can sell for several hundred dollars, as evidenced by this antique blue roof house that previously sold for $895. Another Gottschalk dollhouse sold for over $2,000 in 2024.