It helps if you include
For a price that looks off: which calculator, which fence, what you were quoted or paid, and roughly where you live. Prices differ a lot by region, so the state matters.
For something broken: the page, what you tapped, and whether you were on a phone or a computer.
For a calculator you wish we had: just tell us what you were trying to figure out.
What we can't help with
We're not contractors. We can't quote your project, recommend an installer or tell you what your city's code requires. A licensed local contractor or your building department can.