+=item C<priority>
+
+OPTIONAL. Prices may supply a numerical priority. Higher will trump lower, even when
+supplying higher prices. Defaults to 3 (as in middle of 1-5).
+
+=item C<editable>
+
+OPTIONAL. Prices may flag themselves as editable. An editable price will still
+be subject to checks for higher or lower prices, but will be rendered in a
+fashion that allows the user to overwrite it.
+
+This is potentially very distracting if the price is usually a default price
+and will be changed in a lot of instances so use with caution.
+
+On the other hand it can provide the capability that users unfamiliar with the
+system will intuitively expect so it can be a good way to introduce the system.
+