PricingTable

Three-letter ISO 4217 currency code every amount in the table is expressed in.

How the client picks optional packages when signing: multiple lets them take any number, single lets them take one at most.

The packages in the table, in the order the document shows them.

What the required packages add up to before tax, rounded to the cent, as a decimal string. Optional packages and optional rows are left out until the client picks them.

The tax on the required packages that include it, rounded to the cent, as a decimal string.

What the client pays when they pick nothing optional, tax included, rounded to the cent, as a decimal string. Each total is rounded on its own, so subtotal plus tax_total can be a cent off from it.