I've never been one to be too scared by vaccines and just as well really given the number of vaccines we need to go to South Korea. Yesterday I had to have my first South Korea related vaccination for a total cost of $105 - yes it's not the cost of the vaccine that hurts but the effect it has on your wallet.
The nurse at the travel doctor suggested I might like to have a couple of vaccines as well, given the length of time I will be away and the fact I may be traveling to places like China. So I also have to have a vaccination for typhoid ($50 for a vaccine) and Japanese Encephalitis ($200 for a vaccine!).