Sales tax is included where applicable. And because of the time commitment per customer, there's an $8 service charge for orders under $20.
I am sorry that it is impossible to get the colors perfect on a phone. They are pretty close most of the time but will never be an exact match.
I water this plant every 7 days in the cooler months and in an indoor growing environment. The ceramic bowl (no drain hole for mess free watering) should keep these sansevieria rosettes happy for six months from mid March, 2017. Enough water will keep them from drying out (spots and cut leaves) like so many others you've seen.