Meanings of vast rewards in English

In this same Ireland there have been grotesque excesses - vast rewards for the well-placed.

Yet better did he apprehend her promises of vast rewards, if he would do exactly as she wished.

Where were all those " vast rewards" his dad and Admiral Rogers had talked about so eloquently?

But ' vast rewards', you know.

Pointing to the vast rewards bestowed upon such successful soldiers as Marlborough, Napoleon, and Wellington, he said, with thrilling effect:

Now, after the Ixian's outrageous actions during Paul's funeral, Alia offered vast rewards of spice, and blessings in the name of Muad'Dib, for Bronso's arrest.