Such an auction can be based on different forms of "payment":

But others are based on different forms of society.

Clues given to the solver are based on various forms of wordplay.

It was based on old forms of Norwegian and dialects.

It shows that those "truths" are based on necessary forms of thought that exist in the mind.

Based on the law in several states, providing the seller with a business condition disclosure form, and other forms which may be needed.

Many modern treaties set out their own dispute resolution regime, often based on forms of arbitration.

The interface is based on medical forms and processes.

The economy of Tajikistan is based on different forms of ownership.

The study was based on forms filled out by therapists after treating more than 13,000 students seen at the center between 1989 and 2001.