The tax is 6.5% last time I checked. If you prebuy tickets from a licensed ticket reseller you can find them for roughly 3 percent off. The resellers are out of the area so don't pay any tax so they keep some of what appears to be a discount for profit and pass on some as savings.
If you are staying onsite your tickets are added into a package tax free and that appears to make the Disney Package cheaper.
Be Cool Stay in School!
Next year I'm trying for a summer internship at Stark Industries.