US Tipping, whole bill, or bill minus taxes and fees. Also liquor & beer? {POLLS ADDED}

[Chronos]

@UDS1

I see no great difficulty about requiring the advertised price to be inclusive of sales tax. Those buying in circumstances in which they are not subject to sales tax can then be offered a discount.

Sales tax can be different even in different municipalities in the same county. How do you write an ad that says “Buy our product for only $10, at any of our twenty convenient locations”, if every one of those twenty locations has a different sales tax rate?