To shop and spend a lot of money in a small period of time
To go on a shopping spree
Something that normally has a high price is surprisingly low and affordable
A killer deal
To pay for your own meal, drinks, entertainment etc when you go somewhere with other people
To go Dutch
To cut/reduce/decrease prices of products
To slash prices
Something that has a price above its normal value for what it should be
A rip-off
Looking for items to buy at the lowest price
To go bargain hunting
To offer to pay for something - usually food or drink
It's on me
To look at things in shop windows without any purpose of buying
Window shopping
Allowing someone to buy or do something at the sale price, at a later date (after the sale) because the item was unavailable
To give sb a rain check
To do the shopping for a very long time until you can’t carry shopping bags
To shop till you drop
Something which is unexpectedly cheap
A steal
The activity of shopping for clothes and other things in order to make yourself feel happier
Shopping / Retail therapy
To pay too much for something
To pay through the nose
Something that is worth the money paid
Good value for money
Something that is very expensive
It costs an arm and a leg
To buy something that proves to be worthless
To buy a lemon