Worth

Worth is usually used as a preposition: ‘A four-bed roomed house in the middle of town is probably worth about $200,000.’
The noun related to worth is value: ‘The current value of property is very low compared with this time last year.’
Be worth very little/a fortune etc.: ‘These old computers aren’t worth much nowadays.’
It’s worth doing sth; sth is worth doing (NOT to do): ‘It’s worth remembering that these old cars can be very expensive to run.’