> Because it makes state-level or national-level advertising of prices impossible. Or even local-level in many cases
Hardly impossible, just slightly less easy ("available for $X* (pre-tax)" / "starting at $X").
And are seriously claiming that ease for advertisers takes precedence over ease of use and pricing transparency for consumers?
> and Ctrl+F for "informal" or "negotiation". There are a lot of indicators of developing vs developed countries, but your idea is most assuredly not one of them. Also, sales tax vs VAT has nothing to do with an informal economy or price negotiation either.
Thank you. What I meant was that the only reason it might not be the standard in some developing countries is that they might have more informal economies with more negotiations involved. Literally the only legitimate excuse. But when that's not the case, from Morocco to Sri Lanka to Uzbekistan, price is shown upfront, everything included.