Money - Common verbs and adjectives

Notice how these common verbs are used.
+ spend $ (on) S.T: (v)
   _ Last week I spent $100 on food, and $20 on books.
+ pay (for) S.T: (v)
   _ I paid $200 for my new desk. (= it cost me $200)
+ cost (v)
   _ My new desk cost (me) $200. (= I paid $200)
+ charge (v)
   _ The mechanic charged me $100. (= asked me to pay $100 for the service he provided)
+ lend (v)
   _ Could you lend me some money? or
+ borrow (v)
   _ Could I borrow some money?
+ waste (v)
   _ Parents often think that children waste their money on sweets and other things that they don't need.
+ save (up) (v)
   _ I'm saving (up) for a new bike. I should have enough by the end of the year.

Common adjectives:
free
cheap
reasonable
quite expensive
very expensive
incredibly expensive

   _ The restaurant was quite expensive.

I can't afford (enough money) to go on holiday this year.
How much does it cost?
How much is that watch worth?
It's worh about $50
The cost of living is very high in places like Sweden or Norway, but people still have a good standard of living.
I want to know the value of your friend's gold ring.