Java project

i need the following to be done in core Java

supermarket.com is an online marketplace, here is a sample of some of the products available on our site:
Product code | Name | Price ----------------------------------------------------------
001 | Travel Card Holder | £9.25
002 | Personalised cufflinks | £45.00
003 | Kids T-shirt | £19.95

Our marketing team want to offer promotions as an incentive for our customers to purchase these items. If you spend over £60, then you get 10% off your purchase If you buy 2 or more travel card holders then the price drops to £8.50. Our check-out can scan items in any order, and because our promotions will change, it needs to be flexible regarding our promotional rules.
The interface to our checkout looks like this (shown in Java):
Checkout co = new Checkout(promotionalRules);
co.scan(item);
co.scan(item);
Double price = co.total();

Implement a checkout system that fulfils these requirements.
Test data ---------
Basket: 001,002,003
Total price expected: £66.78

Basket: 001,003,001
Total price expected: £36.95

Basket: 001,002,001,003
Total price expected: £73.76


AIM: to have a base Promotion class and a specific implementations for different promotions e.g. FixedDiscount, TotalDiscount etc and then feed those in via the constructor the values taken from a file e.g. productCode, number, discountAmount etc.

Also to have test cases
no need for any databases the product info and promotions can be passed in as a list hardcoded.
to use only core java and no rest services


Please let me know your availability and cost.