Match the type of account
Urban and rural standing charges differ in the provider examples. A standard24-hour plan, a smart time-of-use plan and a prepay product are different offers. The library marks the exact example scope; it does not imply every account can subscribe.
Separate a standard price from a conditional discount
Direct-debit, online-account and billing conditions can affect an advertised price. Start with the standard posted price, then enter a discount only if the written offer confirms that it applies to you. Do not count a welcome credit every month.
Compare recurring and first-period cost
Annual standing charges are prorated by days/365 in this model; monthly levies use the billing-month input. Keep any exit fee and one-time credit separate from recurring costs. Republic of Ireland examples are not prices for Northern Ireland.