Streetail

The price of an item, often stolen or fenced, that would be bought on the black market or on the street.

Contraction of the words "Street" and "Retail". Typically used when referring to the "Street Retail" price/cost of an item that is often or only sold on the "streets", but is also generally available in bulk quantities to middle-men who pay a "wholesale" rate, and have "retail" or "streetail" prices that they sell the item(s) for.