We are told that 1 ounce = 8 cubic cm and the cost is $65 per ounce. Therefore, we need to first find the volume of the perfume bottle.
The volume of the cubic perfume bottle is the product of its side lengths
![volume=2\operatorname{cm}*2\operatorname{cm}*2\operatorname{cm}]()
![volume=8\operatorname{cm}^3]()
The volume of the perfume bottle is 8 cubic cm and since we know that
1 ounce = 8 cubic cm
and 1 ounce = $65,
the perfume costs $65 and therefore, choice B is correct.