Buying a car for that amount won't buy you anyting decent but will get you someone else's dumped shit. I strongly advice a pushbike, scooter or public transport as it sounds like you do not have the financial means to keep it maintained. As for the prostitute.. Just your right or left saves you a lot of money. The multikit will give pleasure over and over and will most likely keep it's value.400usd, that's 530AUD
I can buy a car.. or a really mint prostitute for that kind of money