Wow that is super cool. I Texas the Sales Tax is a killer because of the fallacy of No State Income tax. The Real Estate and Sales Tax here are high and there is Sales Tax on practically everything under the Sun except raw food.
Also it is my understanding that the 7500 it taken off the Tax Liability so it is like shielding 37,500$ of taxable income at 20% and more at the higher brackets, IMO.