Well, that depends on what area you live in. Tax rates are different in different states and different cities. Unless you live in Oregon or Delaware, you're going to have state sales tax, and possibly local or city sales tax.
If I had to estimate, I'd say at least an additional $20, possibly more, maybe less. Like I said, without knowing where you live, it's hard to say for sure.
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Don't take what I say as being absolute. There's always room for improvement.
