You can get a Korean tourist visa for free. It's good for 59 days, and it's fairly easy to get one …well of course, as long as you complete the requirements.
Here are the requirements that we've prepared and some tips:
1. Application form - you can download the Visa Application form for Korea here. There are some instructions on the second page, take the time read it. There will be available print outs at the embassy and you can use that, but just to relieve you from the stress of standing and looking for the pen, TIN#, etc, just download it and fill it up in advance.