1
general::
Phrase(s): *on the market
openly available for sale. (*Typically: be ~; get something ~; put something ~.) • We put our house on the market last year and it still hasn’t sold.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
For sale; also, available for buying. For example, We've put the boat on the market, or This is the only tandem bicycle on the market right now. This phrase, first put as in the market, dates from the late 1600s; the first recorded use of the phrase with on was in 1891. Also see DRUG ON THE MARKET.
American Heritage Idioms