Retailers don't, like, have to add sales tax on top of listed prices.
They just have to pay it.
They just have to pay it.
https://www.avalara.com/blog/en/north-america/2019/07/retail...
Whether you believe the above or not - and I’m not going to discuss that part further, because this is all easy to find online - the fact remains that most sales taxes must be charged separately from the product price at checkout. There are, as I said, exceptions for bulk goods.