Rosetta Stone offers most Level 1-5 Sets for various languages for $274 with free shipping. Although that's $10 over last week's mention (now expired), it's the lowest total price we could find for any language elsewhere by $12. Choose from Chinese (Mandarin), German, Spanish, French, Italian, Irish, and more.
What are you doing for fun that you could also do for money? Here are some ideas to get you thinking, and tips to get you started.