Again with the BS. Prices go up after your little 30% tax is added. No one on this planet is buying that line anymore. Retirees will be the most screwed folks under the fairtax.
You're more than welcome to show using actual numerical examples with verifiable publicly available data just exactly what happens to the comparative purchasing power (IOW disposable personal income) between the income tax and the FairTax.
FairTax supporters have done this many times on these threads and the results almost always favor the FairTax. And retirees will do just fine as has been shown. So "claim" whatever you like - merely show us the numbers to back up your claims.