-UNIT 3 and 4-

shopping online - the act of a person who shops
saving up -  money saved by economy and put in a safe place
brands - make or version of a product
are worth - good or important enough to justify
sales - a special offering of goods at reduced prices
discounts - to deduct a certain amount from
bargain - a purchase to one's advantage
cost - he price paid to buy, produce
afford -to be able to meet the expense of or pay for
lend - to give
waste - to use up or spend to no profit