дешево in English:

They can make the same product much more cheaply.

I sold my books cheaply.

They buy these goods cheaply overseas and then mark them up to resell at home.

Desktop publishing lets you produce books quickly and cheaply. It's like killing two birds with one stone.

There is no other country where books are read by so many people and can be bought so cheaply as in Japan.

We were all pleased to be so cheaply quit of him.