What is "of sale"

Sale \Sale\, n. [Icel. sala, sal, akin to E. sell. See Sell, v. t.]

1. The act of selling; the transfer of property, or a contract to transfer the ownership of property, from one person to another for a valuable consideration, or for a price in money.

2. Opportunity of selling; demand; market.

   They shall have ready sale for them.
   --Spenser.

3. Public disposal to the highest bidder, or exposure of goods in market; auction.
   --Sir W. Temple.

   Bill of sale. See under Bill.

   Of sale, On sale, For sale, to be bought or sold; offered to purchasers; in the market.

   To set to sale, to offer for sale; to put up for purchase; to make merchandise of. [Obs.]
   --Milton.