Your came from?A sales taxes with no deductions would, even under the most favorable estimates, have to be north of 30% to be revenue neutral.
It's irrelevant anyway because those taxes are already baked into the price of the product. If the actual amount is 30%, it's just an admission that taxes are higher than the left admit. Whatever the rate is, if it's revenue neutral, the price of products won't go up.
And they will go down over time as waste and the infrastructure to collect all the different taxes, counter incentives, disincentives and the rest of the monstrous infrastructure to tax the same money over and over are dismantled.
Sales tax proponents always make that argument, but basic math doesn't support it. If the cost of the tax were already baked in to goods, revenue would be significantly higher than it actually is.