When I'm standing in a store, they absolutely know what the tax is going to be at the register. Online, I admit it's harder... But they still need to figure i

When I'm standing in a store, they absolutely know what the tax is going to be at the register. Online, I admit it's harder... But they still need to figure it out at checkout. I would be fine without a disclaimer that until the shopper's location is specified, the final price can't be calculated, but if they're logged in and it's set, it should show it. Everyone quotes pre-tax pricing because it tricks people into thinking the prices are lower than they are, just like $9.99 feels cheaper than $10.00 when you're making a quick judgement, even though that penny is inconsequential. And it's why gas stations add the additional 9 behind it, making the actual difference even more pointless.