I'm from the UK where tax is included in most advertised prices. I gather things are very different in the USA.
I'm visiting New York City next week, and am looking at the cost of a MetroCard and prices of admission to certain attractions (9/11 museum, Statue of Liberty ferry, Natural History Museum, etc)
For example, a MetroCard is advertised as $31 for an unlimited 7 day ticket. Do I need to add 8.875% sales tax on top? So it will cost $33.75 in total? Is it the same for tickets for attractions?