"Making things up again? I haven't used that number at all,"
Nope, making nothing up. You've cited extensively from the infamous Tax Panel Report and it is there that the claim was made about the $600 billion totalling up to be a huge "entitlement" (both the Panels words and yours) all the while ignoring the very obvious fact that the prebate was not "spending" in any normal sense of the word but a refund of tax money to taxpayers and that any "cost" (funds really) was already encompassed by the 23% revenue neutral rate.
Are you perhaps trying to compete with Mr. Gale in quoting the highest FairTax rate with no evidence? His quote with no evidence was "94%". You've got a ways to go.
So I guess you are admitting that I haven't used the $600 billion number at all. The same number that you accused me an hour ago of continually using.