1. The quality of Transformers toys improves ten-fold. (Made to Mattel standards).
2. The quality of Barbie decreases ten-fold. (Made to Hasbro standards).
Fixed.....
Either or both would happen:
1. The price of Transformers toys increases ten-fold. (Made to Hasbro standards).
2. The Price of Barbie increases ten-fold. (Made to Matel standards)