Surveys can be a fun and easy way to earn money. Companies offer these as market research to find out what the consumers want. It can help prevent major mistakes.
Yes, costly is an adjective. E.g. It was a costly mistake. (One that was expensive to fix, or that led to other bad consequences.)
a
because it is very costly in the market .
It depends. If you count in the long run, it is cheaper. But it may be costly to buy, but saves petrol.
yes
This is true.
This is true.
Yes
You can expect to spend at least a thousand dollars on a heater for your swimming pool. It is worth it to shop around because you might get it cheaper online. You will want to look for the brands and do a little research on the quality since this product is costly.
It can get pretty expesnive depending on where you go. ITT Tech is one of the cheaper options.
Invaded Africa and tried to fight on 3 fronts.
It all really depends what is on the computer. If the computer is just really basic then yes it will be cheaper but if it has a lot of stuff on it then no it will still be costly.