Hi Bjorn, i did london to sydney a couple of years ago with little planning time, so was in the same position as you. I got boosters in Istanbul and then Bangkok. In Istanbul i needed a Rabies and Hep B and just walked into a couple of upmarket looking hotels and eventually one had a number for a private doctor, who they called for me and i went to his surgery, as i remember it was about $40 for both. In BKK i needed Hep A booster and just went to the local hospital and got it done very easilly, although i cant remember how much, i cant remember it being overly expensive. In essence, you can get them on the road but i personally was very picky and careful in ensuring i was getting what i was paying for and that they were using new needles etc, opened in front of you. Hope this helps in some way. William
Some day so soon....