Books+CDs, No Pronunciation scores, Cheap, Most are in German, ★★★
Each short book ($10) teaches basic grammar as well as travel phrases. The audio CDs ($10) are mostly travel phrases. (Kauderwelsch can mean "gibberish," but also can mean "words from different languages.")
They cover 120 languages, and many regional variations of Arabic, English, German, and Spanish, so they will be your best course in some languages, and useful extra practice in others.
They have specific books teaching slang in many languages, a topic which is hard to find elsewhere, though important for understanding movies and ordinary conversation. They teach slang for Australia, Britain, Canada, Cuba, France, Germany (East and West), Hindi, Indonesia, Ireland, Italy, Mexico, Netherlands, New Zealand, Quebec, Russia, Spain, Spanglish, Turkey, United States.
All are explained in German, except there are courses in English for speakers of other languages. CDs have a sentence or phrase in German, then in the target language, then a pause, but no breakdown of words or repetitions. Pauses are omitted in the CDs devoted to slang and to German dialects. (Click for Arguelles' review.)