The large costs, as far as rent, location, installation etc...have already been discussed but any coffee shop but those costs will basically be different for everyone. A coffee shop in NYC is different from a coffee shop in Malaysia, Australia, or Japan.

At a minimum, though, you will have to pay for Wifi, a commercial water boiler, coffee beans, cups etc...and a way to market and promote yourself as being different from everyone else.

Maybe you feature local musicians, or have amazing coffee flavors, great music, reliable free Wifi, comfortable furniture etc...I wish you good luck though because I'm sick of Starbucks!