hi i was wondering how much tax is on a 27.99 i...

hi i was wondering how much tax is on a 27.99 in app purchase

What is the tax rate where you live.

... because apparently Apple doesn't have the means to display to us, what the tax will be prior to purchase, like every other retailer? Oh wait, I will just put a few extra bucks on that gift card to make sure I cover the elusive tax because I don't have time to deal with this. Bingo. Apple knows what a few extra bucks times a million is.