Give money in order to buy something
Pay for
Paper proof of purchase
Receipt
I'm lovin' it
McDonald's
Look at things in store windows without going inside or intending to buy them
Window shop
The person who takes money and gives change in a store
Cashier
Check if something fits
Try on
{Idioms and Expressions}
I regret something I did
Kick myself
Just do it!
Nike
Browse
People who come to buy things - clients
Customers
{Idioms and Expressions}
I'm going to suggest something to you
Tell you what
Something that shows the price of an item
Price tag
{Idioms and Expressions}
There is more than one opinion about that
[That] is debatable
{Idioms and Expressions}
Hoping that something is true, but it isn't
Wishful thinking
{Idioms and Expressions}
It's someones turn to do something nice for someone else
Return an item that doesn't work or don't want
Take back
{Idioms and Expressions}
[These] two things are completely different
Comparing apples [to] oranges
Melts in your mouth, not in your hands!
M&Ms
Look around for things one can buy cheaply for less than their usual price
Bargain hunt
{Idioms and Expressions}
Someone doesn't owe someone else anything
Call it even
{Idioms and Expressions}
Don't believe what someone says
The target people that buy the product being sold
Demographic
{Idioms and Expressions}
There is only one correct opinion about that
No two ways about [it]
Look at the prices of the same or similar items in order to decide which to buy
Comparison shop
People who can't stop buying things even if they don't really need
Shopaholic