I have a bridge to sell you

a bridge too far

A step or action that is too ambitious; an act of overreaching.

bridge over troubled waters

Someone or something that provides support, comfort, and a means to overcome difficult times.

bridge the gap

To serve as or create a connection between disconnected or disparate things.

burn that bridge when one comes to it

To anticipate dealing with a problem or situation either by acting in a manner that alienates or cuts ties with others, or merely with the expectation of encountering trouble.

cross that bridge when one comes to it

To deal with a problem or situation only if and when it arises.

sell bargains

To make saucy (usually indiscreet) comments; to come onto.

sell dearly

To make one's opponent pay a very high price to defeat or obtain (a person, unit, vehicle, or territory).

sell down

To betray a person; to conspire against someone for personal gain.