I love my Korean lessons!!! This is exactly what I needed to do. I have tried Rosetta Stone and Pimsleur CDs. Supposedly the best programs in their respective fields. While they are cheaper ($300 for Rosetta Stone and $250 for Pimsleur) then several classes and definitely cheaper than a private tutor (going rate seems to be about $30 per hour), they just don't compare to the face to face interaction.
When I had no other alternative Rosetta Stone and Pimsleur were fine. The problems I see with using these methods were:
1. You had to rely on your own ear on whether or not you are pronouncing the words correctly. Which is OK for a Romance language (ie French or Spanish), but for a new language that does even share the same alphabet base, this task is near impossible.
2. Learning proper grammer and sentance structure takes a lot longer.
3. No one to ask questions about pronunciations or grammer.
4. Boring. Do you realize how boring it is sitting in front of a computer? Wait...that sounds like my job...lol...j/k.
Anyways, if you can afford it I would highly recommend a class oe tutor over a self taught program. Maybe you can trade cooking lessons for language classes?