メンターの報酬に合わせる

以下問題文でして、一部一覧表を用いる箇所もあるため、可能であればご協力いただける方に該当のサンプルシートをお送りしたいです。
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A shop sells a range of mobile devices, SIM cards and accessories as shown in the table:
※ここに本来はmobile devices, SIM cards,accessoriesの一覧表があります。

Write a program algorithm for this shop.

§ Your program or programs must include appropriate prompts for the entry of data; data must be validated on entry.
§ Error messages and other output need to be set out clearly and understandably.
§ All arrays, variables, constants and other identifiers must have meaningful names.

You will need to complete these three tasks.

Task 1 – Setting up the system.
Write a program to:
§ use appropriate data structures to store the item code, description and price information for the mobile devices, SIM cards and accessories;
§ allow the customer to choose a specific phone or tablet;
§ allow phone customers to choose whether the phone will be SIM Free or Pay As You Go;
§ allow the customer to choose a standard or luxury case;
§ allow the customer to choose the chargers required (none, one or both may be purchased);
§ calculate the total price of this transaction;
§ output a list of the items purchased and the total price.

Task 2 – Allow a customer to order multiple mobile devices. Extend Task 1 to:
§ offer the customer the opportunity to purchase an additional mobile device;
§ if required, perform bulleted steps 2 to 7 of Task 1 for each additional mobile device and calculate a running total for the customer;
§ once no further devices are required, output the total the customer will need to pay.

Task 3 – Offering discounts.
Extend the program to allow a discount of 10% off the price of every additional phone or tablet purchased. Output the new total the customer will need to pay and the amount of money saved.