No, it's assuming the FairTax does what it's supporters claim it does, which is produce the same amount of revenue as the current tax code.
That has never been my goal since I think the government is wasting more money than it spends for the benefit of anybody. My goal is to level the playing field of the tax code, make it far more difficult to manipulate to increase the power, prestige, and personal wealth of those in government, and to produce sufficient money to cover what the government needs to do rather than all the things opportunistic politicians and bureaucrats want to do.
That's fine, but understand that's a different question. The FairTax movement claims their proposal is revenue neutral.
For prices to remain the same under "FairTax" as they are today, one, by definition, must be believe that not only are all business taxes baked into the cost of goods, but that all individual taxes are as well on top of the individuals paying those taxes.
Other than the death tax, which is a small portion of Federal revenues, name a tax that is not baked into the cost of products we buy.