sentences:  A limited range of "Blake's 7" merchandise was issued, and books, magazines and annuals published.The BBC released music and sound effects from the series, and several companies made "Blake's 7" toys and models.Four video compilations were released between 1985 and 1990, and the entire series was released in videocassette format starting 1991 and re-released during 1997, and as four DVD boxed sets between 2003 and 2006.